Answer:
B. 10
Step-by-step explanation:
We can solve this fast by adding the points from the stars and ships together, then subtracting that number from the total 500 points Mateo earnd.
So it would look like this:
180+270=450
500-450=50
So if Mateo scored 50 points from saving prisoners and save is worth 5 points each, we can do 50÷5=10.
a research study randomly assigned participants into two groups. one group was given vitamin e to take daily. the other group received only a placebo pill. the research study followed the participants for eight years. after the eight years, the proportion of each group that developed a particular type of cancer was compared. what is the primary reason that the study used random assignment?
The primary reason for the use of random assignment in the research study was to ensure that participants in each group were similar to each other in terms of relevant factors, such as age, gender, or health status.
By randomly assigning participants into two groups, the researchers could ensure that any difference observed between the two groups was due to the intervention and not due to any other factor.
Random assignment eliminates the possibility of bias being introduced into the study, as the two groups are as similar as possible.
This means that any observed difference between the two groups can be attributed directly to the intervention, in this case, the vitamin E supplement.
By randomly assigning participants, the researchers could be sure that the results of the study were valid and could be relied upon.
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FILL IN THE BLANK. Study with Quizlet and memorize flashcards containing terms like ____ are the categories by which data are grouped
Data categorization is a process of organizing and grouping data into meaningful classes or categories.
This process is often used to simplify data and make it easier to understand and analyze. Data categorization involves breaking down a large set of data into smaller, more manageable groups. For example, a company may group customers into categories based on their age, income, or location. Each group can then be analyzed separately to better understand customer behavior. Categorizing data can also help identify trends or patterns that may not be visible when looking at the data as a whole. Categorization can also be used to identify outliers or anomalies in the data. By breaking down the data into smaller groups, it becomes easier to see which elements don’t fit the pattern or are not part of the normal range. Categorizing data can be done using a variety of methods. For example, data can be divided into numerical ranges or grouped into categories such as low, medium, and high. Data can also be grouped using descriptive terms, such as customer type or product type. Once the data is categorized, calculations such as averages, medians, and modes can be used to analyze the data. This can help to identify patterns or trends that can be used to make decisions or draw conclusions.
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The kinetic energy of a car is found be 40,000 J. What velocity is the car travelling if its mass is 10,000kg.
The velocity of the car is given as follows:
2.83 m/s.
How to obtain the kinetic energy?The kinetic energy is obtained as half the multiplication of an object's mass by the velocity squared of the object, that is:
K = 0.5mv².
The parameter values for this problem are given as follows:
K = 40000, m = 10000.
Hence the velocity of the car is obtained solving the equation for v as follows:
40000 = 0.5 x 10000v²
5000v² = 40000
v² = 8
v = square root of 8
v = 2.83 m/s.
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let x be a random variable, and a, b be constants. use properties of integration/summation to show that: e(ax b) = ae[x] b
E(aX + b) = aE(X) + b, which shows that E(ax + b) = aE(X) + b, as stated.
What is integration ?
An integral assigns numbers to functions in a way that describes displacement, area, volume, and other concepts that arise by combining infinitesimal data. The process of finding integrals is called integration.
This statement can be shown using the linearity property of expectation. According to this property, if X is a random variable and a, b are constants, then E(aX + b) = aE(X) + b.
Applying this property, we have:
E(aX + b) = aE(X) + b
= a(E(X) + b/a)
= aE(X) + ab/a
= aE(X) + b
So, E(aX + b) = aE(X) + b, which shows that E(ax + b) = aE(X) + b, as stated.
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A storage area is shaped like a rectangular prism. It has a width of 6 feet, a height of 5 feet, and a volume of 570 cubic feet.
What is the length of the storage area?
Answer:
19 feet
The length of the storage area is 19 feet.
Step-by-step explanation:
Volume of a rectangular prism (a box shape) is given by:
Volume = length * width * height
We are given three out of four of these numbers. Fill them in and solve for the missing number.
570 = x * 6 * 5
570 = 30x
divide by 30
19 = x
The length is 19 feet. The storage area is 19 feet long.
Answer:
19 feet
Step-by-step explanation:
because I took this question already
Please please please help
An open cylindrical water tank has base radius x metres and height h metres. Each square metre of the
base costs a dollars to manufacture and each square metre of the curved surface costs b dollars. The
combined cost of the base and curved surface is c dollars.
a Find c in terms of a, b, x and h.
X
b
Show that the volume of the tank is given by V = -(c – παχ2).
2b
c As x varies, prove that V is at its maximum when the cost of the base is dollars.
3
V is at its maximum when [tex]a = b\ \pi x[/tex], [tex]V = \pi x2h[/tex], and [tex]c = a x2 + b\ \pi xh[/tex].
Determine the cost of the tank.This question uses the principles of geometry, specifically the formulas for the area of a circle and the area of a curved surface. In addition, the concept of cost maximization is used to determine the cost of the tank when the volume is at its maximum.
Given,
[tex]c = a x2 + b\ \pi xh[/tex]
This equation states that the cost of the tank is equal to the cost of the base plus the cost of the curved surface.
The cost of the base is equal to the area of the base multiplied by the cost per square metre, which is a.
The area of the base is equal to [tex]\pi x2[/tex], where x is the radius of the base. The cost of the curved surface is equal to the area of the curved surface multiplied by the cost per square metre, which is b.
The area of the curved surface is equal to πxh, where h is the height of the tank.
Combining these two equations gives the equation for c.
[tex]V = \pi x2h[/tex]
This equation states that the volume of the tank is equal to the area of the base multiplied by the height.
The area of the base is equal to [tex]\pi x2[/tex], where x is the radius of the base. The height of the tank is h. Combining these two equations gives the equation for V.
V is at its maximum when [tex]a = b\pi x[/tex]
This equation states that the volume of the tank is maximized when the cost of the base is equal to the cost of the curved surface.
The cost of the base is equal to the area of the base multiplied by the cost per square metre, which is a.
The area of the base is equal to [tex]\pi x2[/tex], where x is the radius of the base. The cost of the curved surface is equal to the area of the curved surface multiplied by the cost per square metre, which is b.
The area of the curved surface is equal to πxh, where h is the height of the tank.
Setting a equal to bπx gives the equation for the maximum volume.
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Mountville High won a lacrosse game by 4 points
on Tuesday. On Thursday, they scored 6 more
goals than on Tuesday and again won by 4. The
sum of the opponents' scores for the 2 games
was 14. How many goals did Mountville score on
Tuesday?
E. 4
G. 6
H. 8
J. 10
K. 12
Mountville High did 8 goals on Tuesday & 14 goals on Thursday. Here is the explanation below :
Given
Mountville High opponents total score - 14
Tuesday match won by Mounville High - 4 goals
Thursday match won by Mountville High - 4 goals
Mountville High total score on Thursday & Tuesday - 14+4+4 = 22
Let assume the Tuesday score of Mountville High - x
Thursday score of Mountville High- x+6
Here the solution below :
Tuesday score + Thursday Score = Total score
x+x+6 = 22
2x+6 = 22
2x = 22-6
2x = 16
x = 8
Tuesday Score of Mountville High - 8
Thursday Score of Mountville High - x+6 = 8 + 6 = 14
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Simplify 6.5k + 1.6m - 3.2k.
Answer:
[tex]3.3k+1.6m[/tex]
Step-by-step explanation:
Subtract [tex]3.2k[/tex] from [tex]6.5k[/tex].
Which sets do the square root of 7 belong to
A.) integers and irrational numbers
B.) irrational and real numbers
C.) real and rational numbers
D.) rational and whole numbers
The square root of 7 belongs to the set of irrational numbers and the set of real numbers. Option B is correct.
What is a rational number?In mathematics, a rational number is a number that can be described as the result of a fraction of value or does not have face value.
The square root of 7 is an irrational number because it cannot be expressed as a finite decimal or a fraction. Irrational numbers are a subset of real numbers, which is a set that includes all the real numbers, including both rational and irrational numbers.
Option B) "irrational and real numbers" is the correct answer.
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(b) sketch lines through (0, 0) with slopes 1 4 , 1 2 , − 1 4 , and 4.
Sketch lines through (0, 0) with slopes of 1 4, 1 2, 1 4, and 4 through the line with slope 4: y - 0 = 4 (x - 0), which reduces to y = 4x.
What do you mean by slope?
The slope of a line is a measure of its steepness or incline and is defined as the ratio of the rise (the vertical change) to the run (the horizontal change) between two points on the line. Slope is commonly represented as "m" in the equation of a line, y = mx + b, where m is the slope and b is the y-intercept (the point where the line crosses the y-axis).
The slope of a line can be calculated by dividing the difference in y-coordinates (rise) by the difference in x-coordinates (run) between two points on the line. If (x1, y1) and (x2, y2) are two points on the line, the slope is calculated as:
m = (y2 - y1) / (x2 - x1)
(b) To sketch the lines through (0,0) with slopes 1/4, 1/2, -1/4, and 4, we can use the point-slope form of a line: y - y1 = m(x - x1), where m is the slope of the line and (x1, y1) is a point on the line. For each line, we can substitute the given slope and the point (0,0) to find the equation of the line:
Line with slope 1/4: y - 0 = 1/4 (x - 0), which simplifies to y = 1/4x
Line with slope 1/2: y - 0 = 1/2 (x - 0), which simplifies to y = 1/2x
Line with slope -1/4: y - 0 = -1/4 (x - 0), which simplifies to y = -1/4x
Line with slope 4: y - 0 = 4 (x - 0), which simplifies to y = 4x
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Sketch lines through (0, 0) with slopes of 1 4, 1 2, 1 4, and 4 through the line with slope 4: y - 0 = 4 (x - 0), which reduces to y = 4x.
What do you mean by slope?The slope of a line is a measure of its steepness or incline and is defined as the ratio of the rise (the vertical change) to the run (the horizontal change) between two points on the line. Slope is commonly represented as "m" in the equation of a line, y = mx + b, where m is the slope and b is the y-intercept (the point where the line crosses the y-axis).
The slope of a line can be calculated by dividing the difference in y-coordinates (rise) by the difference in x-coordinates (run) between two points on the line. If (x1, y1) and (x2, y2) are two points on the line, the slope is calculated as:
m = (y2 - y1) / (x2 - x1)
(b) To sketch the lines through (0,0) with slopes 1/4, 1/2, -1/4, and 4, we can use the point-slope form of a line: y - y1 = m(x - x1), where m is the slope of the line and (x1, y1) is a point on the line. For each line, we can substitute the given slope and the point (0,0) to find the equation of the line:
Line with slope 1/4: y - 0 = 1/4 (x - 0), which simplifies to y = 1/4x
Line with slope 1/2: y - 0 = 1/2 (x - 0), which simplifies to y = 1/2x
Line with slope -1/4: y - 0 = -1/4 (x - 0), which simplifies to y = -1/4x
Line with slope 4: y - 0 = 4 (x - 0), which simplifies to y = 4x
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Note: Enter your answer and show all the steps that you use to solve this problem in the space provided.
Find the sum of the measures of the interior angles of the figure.
Answer:
720
Step-by-step explanation:
Sum of the interior angles of any polygon is (n−2)×180.
So 6-2=4
4*180 = 720
how to solve x3 -x = 80
The solution of the equation is [tex]x = x^{1/3} + 80^{1/3}[/tex]
An equation is a mathematical statement that says that two things are equal. Solving an equation means finding the value of the variable that makes the equation true.
In this case, we want to solve for x in the equation x³ - x = 80.
To solve this equation, we can start by isolating the x terms on one side of the equation and the constant 80 on the other side.
To do this, we will add x to both sides of the equation to cancel out the subtraction of x on the left-hand side. The equation becomes
=> x³ = x + 80.
Next, we will take the cube root of both sides to isolate x on one side of the equation. The cube root of x³ is just x, so we get
[tex]x = x^{1/3} + 80^{1/3}[/tex]
Now, we have a simple equation in x and can use basic algebraic techniques to solve for x.
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If A and B are 8 × 9 matrices, and C is a 3 × 8 matrix, which of the following are defined? A. B+ A B. AC
C. C-B
D. BT E. ABT
F. CB
Due to the difference in the number of columns in A and B, the operation B+A is not defined. ACC - This operation cannot be defined because A's number of columns and C's number of rows are not equal.
What do you mean by matrix?A matrix is a row-and-column-organized rectangular array containing numbers, symbols, or expressions. In mathematics, science, and engineering, matrices are frequently used to represent and manipulate data as well as to resolve linear equation systems.
The following are defined given that A, B, and C are all 8 by 9 matrices:
A. B+A - This operation is not described because A and B have different numbers of columns.
B. ACC - This operation is undefinable since A's number of columns and C's number of rows are not equal.
C. C-B - This operation is not described because C has more rows than B does because B has more columns.
D. Assuming B is a matrix with a diagonal of 9, this operation is defined and produces a matrix with a diagonal of 3.
E. AB - This operation is known as AB if A's number of columns and B's number of rows are equal. The outcome is an 8 by 9 matrix.
F. CB - If the number of columns is 1, then this operation is defined.
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Due to the difference in the number of columns in A and B, the operation B+A is not defined. ACC - This operation cannot be defined because A's number of columns and C's number of rows are not equal. C-B - This operation is not described because C has more rows than B does because B has more columns.
What do you mean by matrix?A matrix is a row-and-column-organized rectangular array containing numbers, symbols, or expressions. In mathematics, science, and engineering, matrices are frequently used to represent and manipulate data as well as to resolve linear equation systems.
The following are defined given that A, B, and C are all 8 by 9 matrices:
A. B+A - This operation is not described because A and B have different numbers of columns.
B. ACC - This operation is undefinable since A's number of columns and C's number of rows are not equal.
C. C-B - This operation is not described because C has more rows than B does because B has more columns.
D. Assuming B is a matrix with a diagonal of 9, this operation is defined and produces a matrix with a diagonal of 3.
E. AB - This operation is known as AB if A's number of columns and B's number of rows are equal. The outcome is an 8 by 9 matrix.
F. CB - If the number of columns is 1, then this operation is defined.
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The congruent angles of an isosceles right triangle measure:
a. 90° each
b. 45° each
c. 60° each
d. 180° each
The congruent angles of an isosceles right triangle measure is 45° each.
How big should the angles be in an isosceles right triangle?Properties of an Isosceles Right TriangleOne of its angles is 90 degrees. The base and height of this triangle are the perpendicular legs, which are also referred to as the base and height. In an isosceles right triangle, the other two angles are sharp, congruent, and measure 45 degrees each.Due to the equality of the two sides, the corresponding angle is congruent. As a result, two sides of an isosceles right triangle are congruent, and the associated angles are each 45 degrees, adding up to 90 degrees. The triangle's three angles will thus add up to 180 degrees.To learn more about congruent angles refer to:
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cse 4310 – worksheet3 graph algorithms 1. (50 pts) [graph traversal and representation] for the following graph: a. (10 pts) write down the adjacency list representation
By "graph representation," we only mean the process of storing a particular graph in a computer's memory.
An adjacency matrix is used in sequential representation to show how the graph's vertices and edges map to one another. The undirected graph, directed graph, weighted directed graph, and weighted undirected graph may all be represented using an adjacency matrix.
Edges in a directed graph represent a particular route between two vertex locations. If a path connects vertex A to vertex B, then vertex A serves as the starting point and vertex B serves as the ending point.
It is similar to an adjacency matrix representation of a directed graph except that instead of using the '1' for the existence of a path, here we have to use the weight associated with the edge.
Correct question: What is graph traversal and representation for the graph? write down the adjacency list representation.
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Kristen does 215 jumping jacks in 4 minutes. About how many jumping jacks does she do in 1 minute?
Answer:
average approximately 54
Step-by-step explanation:
215/4 = 53.75
assuming she's a robot & doesn't get tired LOL
Substitute b = 2 into the equation and
evaluate. Then, determine if b = 2 makes
the equation true?
15 = 5b
15 = 5(?)
15 =?
b = 2
make this equation true
b = 2 does not make the equation true
What is an equation?
An equation is a mathematical statement that proves two mathematical expressions are equal in algebra, and this is how it is most commonly used. In the equation 3x + 5 = 14, for instance, the two expressions 3x + 5 and 14 are separated.
In order to make the equation's equality true, the unknown variables must be given values as a solution. In other words, the definition of a solution is a value or set of values (one for each unknown) that, when used as a replacement for the unknowns, transforms the equation into equality.
15 = 5b
when b=2,
15=5(2)
15 = 10
This is not true
So, b = 2 does not make the equation true
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please help solve for x:7^3x+1 = 49^x-1
The value of x is log(49)/log(7³) in the equation 7³x+1 =49ˣ - 1
What is Equation?Two or more expressions with an Equal sign is called as Equation.
The given equation is 7³x+1 = 49^x-1
7³ˣ + 1 = 49ˣ - 1
Take log on both sides
log(7³)ˣ + 1 = log(49)ˣ - 1
x log(7³) = x log(49)
x = log(49)/log(7³)
Hence, the value of x is log(49)/log(7³) in the equation 7³x+1 =49ˣ - 1
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Select the correct answer.
Which hyperbola's asymptote rectangle has the greatest perimeter?
Correct option is D, The greatest perimeter of hyperbola is in (D) ⇒ the perimeter = 60 units
When using hyperbola,
- A hyperbola's standard form of the equation with
transverse axis parallel to the x-axis and the center (h, k) are
[tex]\frac{(x - h)^2}{a^2} - \frac{(y - k)^2}{b^2}[/tex]equals one.
The transverse axis' length is 2a.
The conjugate axis' length is 2b.
The asymptote rectangle's circumference is 2(2a + 2b).
* Let's review the results to determine the largest perimeter.
A)[tex]\frac{ (x - 4)^2}{11^2} - \frac{(y + 2)^2}{3^2} = 1[/tex]
* Compare it to the equation in standard form.
∵ a = 11 ⇒ 2a = 22
∵ b = 3 ⇒ 2b = 6
The circumference is 2(22 + 6) = 56.
B) [tex]\frac{(x - 2)^2}{4^2} - \frac{(y + 1)^2}{10^2} = 1[/tex]
* Compare it to the equation in standard form.
∵ a = 4 ⇒ 2a = 8
∵ b = 10 ⇒ 2b = 20
The circumference is 2(8 + 20) = 56.
C) [tex]\frac{(x + 5)^2}{5^2} - \frac{(y - 3)^2}{9^2} = 1[/tex]
* Compare it to the equation in standard form.
∵ a = 5 ⇒ 2a = 10
∵ b = 9 ⇒ 2b = 18
The circumference is 2(10 + 18) = 56.
D) [tex]\frac{(x - 7)^2}{8^2} - \frac{(y - 2)^2}{7^2} = 1[/tex]
* Compare it to the equation in standard form.
∵ a = 8 ⇒ 2a = 16
∵ b = 7 ⇒ 2b = 14
The circumference is 2(16 + 14) = 60.
* The largest boundary is in (D)
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The population of Exeter is about 15 thousand people. The population of the United States is about 300 million people. What percent of the US population lives in exeter ?
The percent of the US population lives in Exeter is 0.005%
What is percentage?A percentage is a number or ratio that can be expressed as a fraction of 100.
Given that, the population of Exeter is about 15 thousand people and the population of the United States is about 300 million people, we need to find what percent of the US population lives in Exeter
15,000 = 0.015 millions
The percentage of people who live in Exeter = 0.015 / 300 × 100
= 0.005%
Hence, the percent of the US population lives in Exeter is 0.005%
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The percent of the US population lives in Exeter is 0.005%, when the population of Exeter is about 15 thousand people. The population of the United States is about 300 million people.
What is percentage?A percentage is a number or ratio that can be expressed as a fraction of 100. A percentage is a number or ratio expressed as a fraction of 100. It is often denoted using the percent sign, "%", although the abbreviations "pct.", "pct" and sometimes "pc" are also used. A percentage is a dimensionless number; it has no unit of measurement.
here, we have,
Given that, the population of Exeter is about 15 thousand people and the population of the United States is about 300 million people, we need to find what percent of the US population lives in Exeter
we know,
15,000 = 0.015 millions
now,
The percentage of people who live in Exeter = 0.015 / 300 × 100
= 0.005%
Hence, the percent of the US population lives in Exeter is 0.005%
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choose the function and interval for which the mean value theorem does not apply.
The mean value theorem does not apply to functions that are not continuous on a closed interval [a, b], or not differentiable on an open interval (a, b).
The mean value theorem states that if a function f is continuous on the closed interval [a, b] and differentiable on the open interval (a, b), then there exists a point c in the interval (a, b) such that:
f'(c) = (f(b) - f(a)) / (b - a)
For example, the function f(x) = |x| is continuous everywhere, but it is not differentiable at x = 0. The interval [0, 1] does not satisfy the conditions for the mean value theorem to apply.
So, a possible function and interval for which the mean value theorem does not apply is f(x) = |x| on the interval [0, 1].
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Both Canada and the United States produce lumber and footballs with constant opportunity costs. The United States can produce either 10 tons of lumber and no footballs, or 1000 footballs and no lumber, or any combination in between. Canada can produce either 8 tons of lumber and no footballs, or 400 footballs and no lumber, or any combination in between.
(a) Draw the U.S. and Canadian production possibility frontiers in two separate diagrams, with footballs on the horizontal axis and lumber on the vertical axis.
(b) In autarky, if the United States wants to consume 500 footballs, how much lumber can it consume at most? Label this point A in our diagram. Similarly, if Canada wants to consume 1 ton of lumber, how many footballs can it consume in autarky? Label this point C in your diagram.
(C) Which country has the absolute advantage in lumber production?
(D) Which country has the comparative advantage in lumber production?
Suppose each country specializes in the good in which it has the comparative advantage and there is trade.
(e) How many footballs does the United States produce? How much lumber does Canada produce?
(f) Is it possible for the United States to consume 500 footballs and 7 tons of lumber? Label this point B in your Diagram. Is it possible for Canada at the same time to consume 500 footballs and 1 ton of lumber? Lebel this point D in your diagram.
The United States has the comparative advantage in producing footballs, while Canada has the absolute advantage in producing lumber. If the two countries specialize and trade, the United States produces 1000 footballs and Canada produces 8 tons of lumber.
(a)US Production Possibility Frontier:
Football (1000) | 0 | 200 | 400 | 600 | 800 | 1000
Lumber (10) | 10 | 8 | 6 | 4 | 2 | 0
Canadian Production Possibility Frontier:
Football (400) | 0 | 100 | 200 | 300 | 400
Lumber (8) | 8 | 7 | 6 | 5 | 4
(b) In autarky, if the United States wants to consume 500 footballs, it can consume at most 4 tons of lumber. This point is labeled A in the diagram. Similarly, if Canada wants to consume 1 ton of lumber, it can consume at most 300 footballs. This point is labeled C in the diagram.
(c) Canada has the absolute advantage in lumber production.
(d) The United States has the comparative advantage in lumber production.
(e) If each country specializes in the good in which it has the comparative advantage and there is trade, the United States produces 1000 footballs and Canada produces 8 tons of lumber.
(f) Yes, it is possible for the United States to consume 500 footballs and 7 tons of lumber. This point is labeled B in the diagram. It is not possible for Canada to consume 500 footballs and 1 ton of lumber at the same time. This point is labeled D in the diagram.
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For finding median in continuous series, which amongst the following are of importance?Select one:a. all of theseb. Particular frequency of the median classc. Lower limit of the median classd. cumulative frequency preceeding the median class
For finding median in continuous series, all of the four factors are important.
The median is a central value in a data set that separates the upper and lower halves of the data.
In a continuous series, it is important to find the median because it gives us a good indication of the typical value in the series.
To find the median in a continuous series, four factors are important:
a. Particular frequency of the median class: This refers to the number of observations that fall into the median class.
b. Lower limit of the median class: The lower limit of the median class defines the start of the interval in which the median falls.
c. Upper limit of the median class: The upper limit of the median class defines the end of the interval in which the median falls.
d. Cumulative frequency preceding the median class: This refers to the total number of observations that fall into classes before the median class.
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what is 2log5 (5x^3) + 1/3 log5 (x^2 + 6) written as a single logarithm?
[tex]\begin{array}{llll} \textit{Logarithm of exponentials} \\\\ \log_a\left( x^b \right)\implies b\cdot \log_a(x) \end{array} ~\hspace{7em} \begin{array}{llll} \textit{logarithm of factors} \\\\ \log_a(xy)\implies \log_a(x)+\log_a(y) \end{array} \\\\[-0.35em] ~\dotfill[/tex]
[tex]2\log_5(5x^3)+\cfrac{1}{3}\log_5(x^2+6)\implies \log_5( ~~ (5x^3)^2 ~~ )+\log_5\left( ~~ (x^2+6)^{\frac{1}{3}} ~~ \right) \\\\\\ \log_5( ~~ 25x^6 ~~ )+\log_5\left( ~~ (x^2+6)^{\frac{1}{3}} ~~ \right)\implies \log_5\left( ~~ (25x^6)\sqrt[3]{(x^2+6)} ~~ \right)[/tex]
a car travels at na average speed of 64 miles per hour how many miles does it travel. in 5 hours and 45 minutes
Answer:
Step-by-step explanation:
(64)5.45= 348.8
Evaluate each arithmetic series described.
a1=-18, d=-9, n= 14
A. - 1063
B. -2142
C. None of the other answers are correct
D. -2126
E. - 1071
Option D is correct. The sum of the first 14 terms of arithmetic series is -2126.
What is arithmetic series?
The sum of a succession of numbers, such as 1, 2, and so forth, is known as an arithmetic series. Each term is calculated from the preceding one by adding (or subtracting) a constant.
The sum of the first 14 terms in the arithmetic series with first term (-18) and common difference (-9) can be calculated using the formula for the sum of an arithmetic series:
S_n = n/2 * (2a_1 + (n-1)d)
Plugging in the given values, we get:
S_14 = 14/2 * (2 * (-18) + (14 - 1) * (-9))
S_14 = 14/2 * (-36 + (13) * (-9))
S_14 = 14/2 * (-36 - 117)
S_14 = 14/2 * -153
S_14 = -2126
Therefore, the sum of the first 14 terms is -2126.Option D is correct.
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Option D is correct. The sum of the first 14 terms of the arithmetic series is -2126.
What is arithmetic series?
The sum of a succession of numbers, such as 1, 2, and so forth, is known as an arithmetic series. Each term is calculated from the preceding one by adding (or subtracting) a constant.
The sum of the first 14 terms in the arithmetic series with the first term (-18) and common difference (-9) can be calculated using the formula for the sum of an arithmetic series:
S_n = n/2 * (2a_1 + (n-1)d)
Plugging in the given values, we get:
S_14 = 14/2 * (2 * (-18) + (14 - 1) * (-9))
S_14 = 14/2 * (-36 + (13) * (-9))
S_14 = 14/2 * (-36 - 117)
S_14 = 14/2 * -153
S_14 = -2126
Therefore, the sum of the first 14 terms is -2126. Option D is correct.
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on any given day, a child is either healthy or sick. of children who are healthy today 95% will be healthy tomorrow. of the children who are ill today, 55% will still be ill tomorrow. if 20% of children are ill, what fraction of the children are likely to be ill in two days?
3% of children are likely to be ill in two days.
Let's call the fraction of children who are ill today x.
The fraction of children who are healthy today is (1 - x).
The fraction of children who were healthy today and will be healthy tomorrow is (1 - x) * 0.95.
The fraction of children who were ill today and will still be ill tomorrow is x * 0.55.
The fraction of children who will be ill in two days is x * 0.55 + (1 - x) * 0.05 = 0.55x + 0.05 - 0.95x = -0.4x + 0.05.
So, if 20% of children are ill today, then x = 0.2, and the fraction of children who are likely to be ill in two days is -0.4 * 0.2 + 0.05 = 0.03.
Therefore, 3% of children are likely to be ill in two days.
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3% of children are likely to be ill in two days.
Let's call the fraction of children who are ill today x.
The fraction of children who are healthy today is (1 - x).
The fraction of children who were healthy today and will be healthy tomorrow is (1 - x) * 0.95.
The fraction of children who were ill today and will still be ill tomorrow is x * 0.55.
The fraction of children who will be ill in two days is x * 0.55 + (1 - x) * 0.05 = 0.55x + 0.05 - 0.95x = -0.4x + 0.05.
So, if 20% of children are ill today, then x = 0.2, and the fraction of children who are likely to be ill in two days is -0.4 * 0.2 + 0.05 = 0.03.
Therefore, 3% of children are likely to be ill in two days.
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According to medical research, teenagers need to sleep Which value of g is least likely to occur if the
9 hours per night.
An article in the school newspaper claims that 50% of the newspaper's claim is correct?
1,200 students at their high school are not getting enough o 0. 50
A sample of 50 students are selected from this population O 0. 60
and asked if they get the recommended number of hours
O 0. 70
of sleep per night. Let P = the proportion of students in
O 0. 80
the sample who do not get enough sleep.
sleep.
According to medical research, teenagers' need to sleep, (0.60, 0.70, and 0.80) is higher than 0.50, so they are less likely to occur.
The value of g that is least likely to occur is 0.50.
The article in the school newspaper claims that 50% of the 1,200 students at the high school are not getting enough sleep,
which would mean that P = 0.50.
However, the sample of 50 students is likely to differ from the population of 1,200 students,
So it's possible that the proportion of students in the sample who do not get enough sleep is different from 0.50.
The other values of g (0.60, 0.70, and 0.80) are higher than 0.50, so they are less likely to occur.
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It's clear that this course teaches a combination of analytical and Euclidean geometry. Based on your experiences so far, which approach to geometry do you prefer? why? which approach is easier to extend beyond two dimensions? what are some situations in which one approach to geometry would prove more beneficial than the other? describe the situation and why you think analytical or euclidean geometry is more applicable. Discussion topic
Both analytical and Euclidean geometry have strengths and applications, and which technique to choose depends on the individual problem or job at hand.
Analytical geometry, often known as coordinate geometry, represents and analyses geometric objects using mathematical ideas such as algebra and calculus. It is especially useful for analysing objects with a distinct numerical representation, such as lines, circles, and conic sections. Analytical geometry, which provides a systematic framework for modelling and analysing things in any number of dimensions, may readily be extended beyond two dimensions.
Euclidean geometry, on the other hand, studies geometric objects such as points, lines, and planes using a set of axioms and definitions. This method is very beneficial for learning geometric concepts like congruence, similarity, and structures. Euclidean geometry is also beneficial for problem solving that necessitates visualisation, intuition, and spatial reasoning.
Analytical geometry is more helpful in real-world applications such as computer graphics, where objects are represented using mathematical equations and algorithms. Euclidean geometry, on the other hand, is more beneficial in fields like architecture and engineering, where a greater knowledge of geometric principles and spatial reasoning is necessary.
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Noah bought a computer cartridge for $28.50. Sales tax on the cartridge was 6.5%. What was the total amount that Noah paid for the cartridge?
The total amount that Noah paid for the cartridge is $30.35
What is sales tax?A sales tax is one that applies to the purchase of goods and services for consumers and to the sale of goods and services for businesses.
Given that, Noah bought a computer cartridge for $28.50. Sales tax on the cartridge was 6.5%.
We need to find the total amount that Noah paid for the cartridge,
Total amount = sales tax + original cost
Total amount = 6.5% of 28.50 + 28.50
= 6.5 / 100 × 28.50 + 28.50
= 30.35
Hence, the total amount that Noah paid for the cartridge is $30.35
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