A ratio has two or more numbers that symbolize relation to each other. Ratios are used to compare numbers, and you can compare them using division.
If the ratio is 5: 3, (girls: boys) we can use this equation to figure out how many boys there are if there are 35 girls:
35 × 0.6 = 21Why do we multiply by 0.6?We can see that in the ratio 5: 3, 5 is being multiplied by 0.6 to get three. If the relationship between the numbers 5 and 35 stays proportional, we multiply 35 by 0.6.
Therefore, the ratio of girls to boys is 35: 21, meaning there are 21 boys.
A candy bar box is in the shape of a triangular prism. The volume of the box is 1,200 cubic centimeters.
See picture
Part A: What is the height of the base? Show your work. (5 points)
Part B: What is the approximate amount of cardboard used to make the candy
box? Explain how you got your answer. (5 points)
PART A) The height of the base is 10cm
PART B) Aproximate amount of cardboard to make the candy box is 860cm. You add all of the totals from each side to get the grand total of 860cm.
Review: RI.10.3 - How does the author connect the ideas concerning citizen science projects and conservation? * 50 points by comparing the benefits of citizen science projects with those of conservation by showing how citizen science projects further the goals of conservation by arguing that citizen science projects focus more on community outreach than conservation by describing how little participants in citizen science projects know about conservation
The value of m∠C in the triangle is 42.77°
How to find the value of m∠C?
The sine rule is a mathematical formula used in trigonometry to find the length of a side or the size of an angle in a triangle when two sides and one of the angles opposite to those sides are known. It states that:
a/sin A = b/sin B = c/sin C
Where a, b, and c are the lengths of the sides of the triangle and A, B, and C are the angles opposite to those sides.
m∠A = 47°, a = 28, c = 26.
a/sin A = c/sin C
28/sin 47° = 26/sin C
sin C = (26 sin 47°)/28
sin C = 0.6791
C = arcsin(0.6791)
C = 42.77°
Thus, m∠C = 42.77°
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5. What percent of 68 is 17
Answer: 25%
Step-by-step explanation:
Divide 17/68 = .25
Move decimal 2 places over = 25%
4. Please complete the following math problem & show your work.
You are responsible for making sure that the club has a sufficient inventory of light bulbs. You need to have 20 light bulbs of each
size in storage. You need to check all of the storage closets to get a count. In the first storage closet, you find five boxes of 36" bulbs
with two in each box and four boxes of 24" bulbs with four in each box. In the second storage closet, you have three boxes of 36°
bulbs with four in each box. In addition, you know you need to replace four 36 bulbs. How many do you need to order in order to
keep twenty of each size in stock?
You need to order 2 36" bulbs and 4 24" bulbs in order to keep twenty of each size in stock.
What is the stock?The stock is a type of security that represents ownership in a company. It is a financial asset that can be traded, and the price of the stock is determined by the supply and demand of the market. When a company issues stock, the stockholders gain a share of the company’s ownership.
36" bulbs:
First storage closet: 5 boxes with 2 in each box = 10
Second storage closet: 3 boxes with 4 in each box = 12
Total = 10 + 12 = 22
Need to order = 20 - 22 = 2
24" bulbs:
First storage closet: 4 boxes with 4 in each box = 16
Total = 16
Need to order = 20 - 16 = 4
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F(x) = 9 - x, g(x) = x2 + x, h(x) = x - 2 Compute the following
1. f(h(-3))
2. g(h(-9))
3.f(g(x))
The values of the composite functions, obtained by evaluating the functions at a specified x value input are presented as follows;
1. f(h(-3)) = 14
2. g(h(-9)) = 110
3. f(g(x)) = 9 - x² - x
What is a composite function?A composite funtion is a function that is applied to the output of another function.
The functions are; F(x) = 9 - x, g(x) = x² + x, h(x) = x - 2
The composite functions, which are functions that have a function as an input, aere evaluated as follows
1. h(-3) = (-3) - 2 = -5
f(h(-3)) = f(-5), therefore;
f(-5) = 9 - (-5) = 9 + 5 = 14
f(-5) = 14
f(h(-3)) = 14
2. h(-9) = -9 - 2 = -11
g(h(-9)) = g(-11)
g(-11) = (-11)² + (-11) = 121 - 11 = 110
g(-11) = 110
Therefore; g(h(-9)) = g(-11) = 110
g(h(-9)) = 110
3. g(x) = x² + x
f(x) = 9 - x
Therefore, f(g(x)) = f(x² + x) = 9 - (x² + x) = 9 - x² - x
f(g(x)) = 9 - x² - x
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What are the domain and the range of this relation?
Water (gallons)
500
400
300
200
100
0
10 20 30 40 50 60 70 80 90 100
Time (minutes)
X
For the given relation, the domain is [0,70] and the range is [0,500].
What is meant by relation?
In mathematics, a relation describes the connection between two distinct sets of data. If more than two non-empty sets are taken into consideration, the relationship between them will be determined if there is a connection between their items. The relationship between two or more sets of values is called a relation.
Assume that there are two sets of ordered pairs, x and y. If set x and set y are related, then the values of set x are referred to as the domain while the values of set y are referred to as the range.
W can also determine domain and range from graphs.
Also, note that the given graph is continuous so the domain and range values all all values in an interval.
The domain represents all the input values which are on the x-axis.
From the given graph, we can see that the domain values are in the interval [0,70].
The range represents all output values which are on the y-axis.
From the graph, the range values are in the interval [0,500].
Therefore for the given relation, the domain is [0,70] and the range is [0,500].
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Consider the hypothesis test below. The following results are for independent samples taken from the two populations. n = 200, pi = 0.28; n2 = 300, p2 = 0.18 Sample 1 Sample 2 Use pooled estimator of . a. What is the -value (to 4 decimals)? Use Table 1 from Appendix B. b. With , what is your hypothesis testing conclusion?
The p-value is 0.0062 and we reject the null hypothesis
What is the p valueFrom the question, we have the following parameters that can be used in our computation:
n = 200, pi = 0.28; n2 = 300, p2 = 0.18
The p value is calculated as
Z = (p1 - p2) - (d0 /√(p * (1 - p) * (1/n1 + 1/n2)))
Where
d0 = 0.28 - 0.18 = 0.10.
So, we have
Z = (0.28 - 0.18) - (0.10 / √(0.23 * (1 - 0.23) * (1/200 + 1/300)))
Evaluate
Z = -2.50
Uisng the z-score table, we have
p = 0.0062
What is your hypothesis testing conclusion?We reject the null hypothesis that the population proportions are equal
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(Acceptance Sampling.) The following two acceptance rules are being con- sidered for determining whether to take the delivery of a large shipment of components: Rule 1. A random sample of ten components is checked, and the shipment is accepted only if none of them is defective. Rule 2. A random sample of twenty components is checked, and the ship- ment is accepted only if not more than one of them is defective. Which of these acceptance rules has the smaller probability of accepting a shipment containing 20% defectives?
we can see that Rule 2 has a higher probability of accepting a shipment containing 20% defectives. Therefore, Rule 2 has a smaller probability of accepting a shipment containing 20% defectives.
How to find Probability of acceptance?To compare the probabilities of acceptance of a shipment containing 20% defectives for the two rules, we can calculate the probabilities for both rules and compare the results.
Ac coding to data:For Rule 1, the probability of accepting a shipment containing 20% defectives is given by the probability of having 0 defectives in a sample of 10 components. This can be calculated as
P(Accept | 20% defectives) = (0.8)¹⁰
= 0.107374
For Rule 2, the probability of accepting a shipment containing 20% defectives is given by the probability of having 0 or 1 defectives in a sample of 20 components. This can be calculated as:
P(Accept | 20% defectives) = (0.8)²⁰ + ²⁰C₁ * (0.8)¹⁹ * (0.2)
= 0.276
Comparing the two probabilities, we can see that Rule 2 has a higher probability of accepting a shipment containing 20% defectives. Therefore, Rule 2 has a smaller probability of accepting a shipment containing 20% defectives.
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One way to pack a 100 by 100 square with 10 000 circles, each of diameter 1, is to put them in 100 rows with 100 circles in each row. If the circles are repacked so that the centres of any three tangent circles form an equilateral triangle, what is the maximum number of additional circles that can be packed?
In this configuration, the number of circles that can be packed is already at its maximum of 10,000.
What is Equilateral triangle?
All sides of an equilateral triangle are the same length. That is, all of the triangle's angles will be congruent.
It is not possible to add more circles in this configuration because the centers of the tangent circles already form an equilateral triangle, which is the most efficient way to pack circles.
In this configuration, the number of circles that can be packed is already at its maximum of 10,000.
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A manager is assessing the correlation between the number of employees in a plant and the number of products produced monthly. The table shows the data:
Number of employees
(x) 0 10 20 30 40 50 60 70 80
Number of products
(y) 120 200 280 360 440 520 600 680 760
Part A: Is there any correlation between the number of employees in the plant and the number of products produced monthly? Justify your answer. (4 points)
Part B: Write a function that best fits the data. (3 points)
Part C: What does the slope and y-intercept of the plot indicate? (3 points)
Answer:
Part A: Yes, there is a correlation between the number of employees in the plant and the number of products produced monthly. This is because as the number of employees increases, the number of products produced also increases in a linear fashion.
Part B: The function that best fits this data is y = 8x + 120, where x is the number of employees and y is the number of products.
Part C: The slope of this plot indicates that for every additional employee, there is an increase of 8 products produced monthly. The y-intercept of this plot is 120, which is the number of products that would be produced if there were no employees.
y=15x+b what does b equal
Therefore , the solution of the given problem of equation comes out to be value of b = 0 , as it is parallel to y axis.
Equation: What is it?The identical symbol (=) is used in arithmetic equations to signify the equality of two statements. It is shown that it is possible to evaluate various numerical factors using mathematical techniques, which have served as manifestations of reality. In actuality, even though the solution is y + 6 = 12, the equal sign divides the figure 12 into two distinct parts. How many characters are also present along either end of such a character can be calculated. Conflicting sign readings are common.
Here,
Given :
=> equation y = 15x + b
Comparing to y = mx+ b
Where b is said to be intercept.
So , value of b = 0 , as it is parallel to y axis.
Therefore , the solution of the given problem of equation comes out to be value of b = 0 , as it is parallel to y axis.
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Period/Bell:
1. The figure below is a square with four congruent parallelograms inside.
A
12
What is the area, in square units, of the shaded
portion?
The area of the shaded portion of the given figure is 84 sq. units.
What is meant by area?
The size of a region on a surface is determined by its area. Surface area refers to the area of an open surface or the boundary of a three-dimensional object, whereas the area of a plane region or plane area refers to the area of a structure or planar lamina.
From the figure, we can conclude that,
Area of the shaded portion = Area of the square - Area of the four congruent parallelograms.
Now we have to find the area of square and parallelograms separately.
Area of square
Side length l = 12
Area = l *l = 12 * 12 = 144 sq. units
Area of parallelograms
Base b = 5
Height h = 3
Area of 1 parallelogram = b.h = 5 * 3 = 15 sq. units
Since all the parallelograms are congruent,
Area of all 4 parallelograms = 15 * 4 = 60 sq. units
Hence the area of the shaded portion of the given figure = 144 - 60
= 84 sq. units
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For the following equation, determine the values of the missing entries. Reduce all fractions to lowest terms.
x=y2
Note: Each column in the table represents an ordered pair. If multiple solutions exist, you only need to identify one.
Therefore, the solutions to the equation are (0, 0), (1, 1), (-1, 1), (2, 4), (-2, 4), (3, 9), and (-3, 9).
Which equation is this?In arithmetic equations, the exact symbol (=) is used to denote the equivalence of two assertions. It is demonstrated that mathematical methods, which have acted as manifestations of reality, can be used to assess a variety of numerical factors. The equal sign actually splits the number 12 into two separate pieces, despite the fact that the result is y + 6 = 12.
Here,
We can plug in some arbitrary values for y to find the corresponding values of x:
y x
0 0
1 1
-1 1
2 4
-2 4
3 9
-3 9
Therefore, the solutions to the equation are (0, 0), (1, 1), (-1, 1), (2, 4), (-2, 4), (3, 9), and (-3, 9).
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Under certain air conditions, the air temperature drops about 3.8°F for each 1,000-foot rise in altitude. Complete parts (A) and (B) below.
(A) If the temperature at sea level is 63°F, write a linear equation that expresses temperature T in terms of altitude A in thousands of feet.
(B) At what altitude is the temperature 9.8°F?
***
(A) If the temperature at sea level is 63°F, write a linear equation that expresses temperature T in terms of altitude A in thousands of feet.
Answer: A) T = 63 - 3.8A (where T is the temperature in °F, A is the altitude in thousands of feet)
(B) To find the altitude when the temperature is 9.8°F, we can substitute 9.8 for T and solve for A:
9.8 = 63 - 3.8A
3.8A = 63 - 9.8
3.8A = 53.2
A = 14
Step-by-step explanation:
Determine whether the following example describes accuracy, precision, neither, or both: Three friends run a 5K and their times are 20 minutes, 21 minutes, and 21 minutes. The average time is 27 minutes. a.) Precision b.) Both c.) Accuracy d.) Neither
the average time of 27 minutes is not an accurate representation of the friends' actual times, so the example describes neither accuracy nor precision.
What is precision?Precision refers to how close multiple measurements are to each other. In this example, the three friends' times are all close to each other (20 minutes, 21 minutes, and 21 minutes), so the measurements are precise.
According to question:Accuracy refers to how close a measurement is to the true or correct value. In this example, the average time of the three friends running a 5K is 27 minutes, but the actual average time should be 20.33 minutes (20 + 21 + 21 / 3). So, the measurement is not accurate.
However, the average time of 27 minutes is not an accurate representation of the friends' actual times, so the example describes neither accuracy nor precision.
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If y is proportional to the square root of x and y is=21 when x=49 find y when x =144
Answer:
y = 36
Step-by-step explanation:
Because the problem says y is proportional to the square root of x, we can assume that it is directly proportional.
The general formula for direct proportionality is
[tex]y=kx[/tex], where k is the constant of proportionality.
Taking into account the square root of x, we can use the following formula to find k by plugging in x and y:
[tex]y=k\sqrt{x}\\ 21=k\sqrt{49}\\ 21=7k\\3=k[/tex]
Since we found k, we can now use this value and the x we're given for the second part of the problem to find y:
[tex]y=3\sqrt{x} \\y=3\sqrt{144}\\ y=3*12\\y=36[/tex]
Solve the inequality for x. 3x + 9 < 3
Responses
A x < 2
B x < −2
C x < 1
D x < −1
61.5 km=615.00m
True or False
Answer:true
61.5 km = 61.5 x 1000 =61.500 m
19. A tree standing on a horizontal plane is leaning towards east. At two points situated at distances a and b exactly due west on it, the angles of elevation of the top of the tree are respectively a and ß. Find the height of the top of the tree from the ground.
The height of the top of the tree from the ground is h = a * b / (a / b) = a * b
How did we arrive at the value?Let's call the height of the tree "h". Then, using trigonometry, we can write two equations to describe the two angles of elevation:
tan(a) = h / a
tan(ß) = h / b
Dividing these two equations, we get:
tan(a) / tan(ß) = h / a * b
Since tan(a) / tan(ß) = a / b, we can substitute this and simplify:
h = a * b / (a / b) = a * b
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A clothing business finds there is a linear relationship between the number of shirts, n , it can sell and the price, p , it can charge per shirt. In particular, historical data shows that 1,000 shirts can be sold at a price of $30 , while 3,000 shirts can be sold at a price of $20 . Find a linear equation in the form p(n)=mn+b that gives the price p they can charge for n shirts.
The linear Equation in the form of p(n)=mn+b is p(n) = -0.005n + 999.85.
What is Equation?Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.
It demonstrates the equality of the relationship between the expressions printed on the left and right sides. LHS = RHS is a common mathematical formula.
Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.
Given:
In particular, historical data shows that 1,000 shirts can be sold at a price of $30 , while 3,000 shirts can be sold at a price of $20 .
p = price
n = number of shirts
m = slope of the line (note, the more shirts, the lower the price, so we know it's going to be negative)
b = y intercept
so, the slope is
= (20- 30)/ (3000 - 1000)
= -10 / 2000
= -0.005
and, the equation is
p - 1000 = -0.005 ( n- 30)
p- 1000 = -0.005n + 0.15
p(n) = -0.005n + 999.85
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Answer:
Step-by-step explanation:
Alexa opens a retirement account and is starting with $100. He plan to add $25 each month to the account ? What’s is the equation and how much money will Alexa have after 6 months and after 12 months ?
Answer:
The equation to calculate the balance in the account after "x" months would be: y = 100 + 25x
And after 6 months, Alexa would have $250 in his retirement account, and after 12 months, he would have $400 in his account.
Step-by-step explanation:
Let's call the balance in Alexa's retirement account after "x" months "y".
The equation to calculate the balance in the account after "x" months would be:
y = 100 + 25x
After 6 months, Alexa would have added 6 * $25 = $150 to the original balance of $100, so the balance would be:
y = 100 + 25 * 6 = 100 + 150 = $250
After 12 months, Alexa would have added 12 * $25 = $300 to the original balance of $100, so the balance would be:
y = 100 + 25 * 12 = 100 + 300 = $400
So, after 6 months, Alexa would have $250 in his retirement account, and after 12 months, he would have $400 in his account.
I have to find
A)
B)
Please and thank you if you do :)
a. (f + g) (0) = 0
b. (f/g) (3) = 2/3
This can be solved by function method.
What is functions?Function is a mathematical phrase, rule, or law that establishes the connection between an independent variable and a dependent variable (the dependent variable). A function is described as a relationship between a group of inputs and one output each. In simple terms, a function is a connection between inputs, with each input corresponding to exactly one output. Every function has its own domain and codomain, as well as a range. f(x), where x is the input, is a common way to refer to a function.
(a) (f + g) (0) = .........
g(0) = 0, f(0) = 0
(f + g) (0) = f(0) + g(0)
(f + g) (0) = 0 + 0
(f + g) (0) = 0
(b)
(f/g) (3) = ............
f(3) = 2, g(1/3) = 1
(f/g) (3) = f(3) × g(1/3)
(f/g) (3) = 2 × (1/3)
(f/g) (3) = 2/3
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simplify 5+2/3-3-2/3
Answer:
Step-by-step explanation:
5+2/3-3-2/3
5+93439535309573092
I need hep on this question pls help and Explain.
I attached it.
Answer:
Yes
Step-by-step explanation:
no. of squares able to fit length=800/40=20
no. of squares able to fit breadth= 120/40=3
total no. of squares able to fit entire rectangle=20×3=60
cost of squares=60×4.50=270
Yes, he has enough money to buy all the paving stones.
josiah ate three-eighths of his orange before his soccer game. He ate one third of the orange durning half-time. How much of the orange did he eat in all
By adding the two given fractions we can see that Josiah ate 17/24 of his orange.
How much of the orange did he eat in all?We know that first, Josiah ate 3/8 of his orange.
Then at this point, the remaining amount is 5/8 of the orange.
Then he ates 1/3 of the orange (the total orange, not the remaining amount)
Then the total fraction of the orange that he ate is:
3/8 + 1/3
Finding a common denominator we will get:
9/24 + 8/24 = 17/24
We conclude that Josiah ate 17/24 of his orange.
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What is the particular integral of ODE y”+3y’+2y= 2x+1
Refer to the attached images.
which of the following steps could give us the minimum point of a function f(x) that is twice differentiable and defined over the reals?
The minimum point of a function f(x) is obtained as follows:
Obtaining the derivative of the function.Obtaining the zeros of the derivative of the function.Obtaining the signal of the second derivative at each of the zeros of the first derivative.If the second derivative is positive, then the x-coordinate for which f'(x) is a minimum and thus (x, f(x)) is the minimum point.What are the requirements for the minimum point of a function?There are two requirements such that a value of x = a is a minimum point of a function f(x):
The first derivative at x = a is of zero, that is, f'(a) = 0.The second derivative at x = a is positive, that is, f''(a) > 0.More can be learned about relative extremas of a function at https://brainly.com/question/1938915
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han types the letters a,s,d,f and then repeats them over and over what is the 5th letter diego will type
The fifth letter, Diego will type, is 'a'.
What is a sequence?An ordered list of things is a sequence (or events). Similar to a set, it has members (also called elements, or terms). The length of the sequence is the number of ordered items (potentially infinite).
Given:
Han types the letters a, s, d, f.
And repeats the over and over.
That means,
a, s, d, f, a, s, d, f, a, s, d, f, ....
Here, the fifth letter is 'a'.
So, the Diego will type 'a'.
Hence, the fifth letter is 'a'.
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In AVWX, VX is extended through
point X to point Y,
m/XVW
m/WXY
m/VWX =
m/WXY.
=
-
(3x + 13)°,
(9x - 14), and
(x+8)°. Find
Answer:
I'm sorry but your question is not clear. Can you please provide more context or clarify what you are asking?
The function graphed above is:
Increasing on interval(s)
Decreasing on interval(s)
The function graphed above is:
Increasing on interval: (-3 0.5),
Decreasing on interval(s): (-∞ -3) and (0.5 ∞)
What is decreasing and increasing interval?Real number intervals with growing and decreasing real-valued functions are referred to as increasing and decreasing intervals.
We apply the first-order derivative test to examine the sign of the derivative in each interval and identify the growing and decreasing intervals.
For the graph attached, the decreasing interval is
from negative infinity to -3 and 0.5 to positive infinityWhile the increasing interval is from -3 to 0.5
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