Answers
For the graph of the cubic root function, the function has no intercept.
What is the cartesian plane?The cartesian plane is a two-dimensional coordinate plane that is formed when two parallel lines meet. The X-axis is the horizontal line, and the Y-axis is the vertical line. On the Cartesian plane, the coordinate point (x, y) indicates that the point is on the right of the origin if the sign of x is positive; otherwise, the point is on the left of the origin.
Given the graph of the cubic root function,
The points where a line crosses an axis are known as the x-intercept and the y-intercept, respectively.
the function of the graph is y = ∛x
when x = 0, y = 0
the function does not have any intercept.
Hence option C is correct.
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Related Questions
Question 5(Multiple Choice Worth 2 points)
(Translating Algebraic Inequalities MC)
Wyatt had to climb the stairs to ride the waterslide. The top of the waterslide was more than 56 feet from the ground. Which graph represents this inequalit
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Answers
The graph representing the inequality x ≥ 12 is with a closed and shaded circle to the left.
What is inequality ?
An inequality is an expression that shows the non-equal comparison of the two or more numbers and variables. A number line can be used to represent numbers put on regular intervals. A number line is sometimes used to represent an inequality.
The height of the water slide is = 56 feet
The graph representing the inequality x ≥ 12 is shown on the number line begining from 12 with a closed and shaded circle.
Therefore, The graph representing the inequality x ≥ 12 is with a closed and shaded circle to the left.
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consider the system of equations 2x −5y =1 4x −10y =3 how many solutions does this system have? explain.
Answers
Solutions for the system of equations 2x −5y =1 , 4x −10y =3 has no solution as ( 2 /4 ) = (-5/-10) ≠ (1/3) .
Simplify the system of equations to get the solution of the system :
2x - 5y = 1
⇒ 2x = 1 + 5y
⇒ x = ( 1+ 5y ) / 2 __(1)
4x -10y = 3
⇒ 2 ( 2x - 5y ) = 3
⇒2x - 5y = 3/2 ___(2)
Standard form of the system of equations are :
a₁x + b₁y + c₁ = 0
a₂x + b₂y + c₂ = 0
Substitute the value of x from (1) into (2) we get,
2 ( 1 + 5y )/2 - 5y = 3/2
⇒1 + 5y -5y = 3/2
⇒1 = 3/2
⇒2 = 3 which is not true.
System of the equation has no solution.
Here, ( a₁ /a₂ ) = (b₁ /b₂) ≠ (c₁ /c₂ ) that is ( 2 /4 ) = (-5/-10) ≠ (1/3) .
Therefore, the system of equations has no solution.
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ASAP. Need the question soon—25 points given.
Answers
Answer:
s=8
Step-by-step explanation:
The two angles are vertical angles and vertical angles are equal.
110 = 8s-2
Add 2 to each side.
110+2 = 8s-2+2
112 = 8s
Divide each side by 8
112/8=8s/8
14=s
Aya sells stuffed animals at a craft fair. She charges $13 for the small ones and $12 for the large ones. She sold $350 worth of animals. After the show, she noticed that she sold 27 stuffed animals. How many were small and how many were large?
Answers
Let's call the number of small stuffed animals sold "x" and the number of large stuffed animals sold "y".
We know that:
x + y = 27 (the total number of stuffed animals sold)
13x + 12y = 350 (the total amount of money Aya earned)
We can use these two equations to solve for x and y. To do this, we'll use substitution:
x + y = 27
x = 27 - y
Now, we'll substitute this expression for x into the second equation:
13(27 - y) + 12y = 350
351 - 13y + 12y = 350
351 = 350
This equation is true for all y, which means that we cannot solve for y using these two equations. We need more information to determine the number of small and large stuffed animals sold.
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x + y = 27 (the total amount of stuffed creatures sold) (the total number of stuffed animals sold)
These two formulae can be used to find the answers to x and y. We'll use replacement to accomplish this:
x + y = 27
x = 27 - y
We will now change x in the second equation to the following expression:
13(27 - y) + 12y = 350
351 - 13y + 12y = 350
351 = 350
Cheese burgers= x
Hamburgers= y
y-x= 62
x+y = 588
add both equations
2y=650
y=650/2
y= 325 ---------- hamburgers
cheese burgers
Answers
The total number of Cheeseburgers will be 263.
What is an Equations?
Equations are mathematical statements with two algebraic expressions on either side of an equals (=) sign. It illustrates the equality between the expressions written on the left and right sides. To determine the value of a variable representing an unknown quantity, equations can be solved. A statement is not an equation if there is no "equal to" symbol in it. It will be regarded as an expression.
Cheese burgers= x
Hamburgers= y
y-x= 62
x+y = 588
we add both the equations we get 2y = 650
y=650/2
y= 325
x = 588-325= 263
Hence, The total number of Cheeseburgers will be 263.
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80 percent of students finished their assignment on time. if 30 turned theirs in late, how many total students were in the class?
Answers
Answer:
150
Step-by-step explanation:
80% on time so 20% late, 30 late
30/20% = 150
East West Distributing is in the process of trying to determine where they should schedule next year's production of a popular line of kitchen utensils that they distribute. Manufacturers form in four different countries have submitted bids to East West. However, a pending trade in bill in Congress will greatly affect the cost to East West due to proposed tariffs, favorable trading status, etc. After a careful analysis, East West has determined the following cost breakdown for the four manufacturers (in $1,000's) on whether or not the trade bill passes: Bill Passes country A 260, country B 320, country C 240, country D 275 Bill Fails country A 210, country B 160, country C 240, country D 210 a. If East West estimates that there is a 40% chance of the bill passing, which country should they choose for manufacturing? b. Over what range of values for the "bill passing" will the solution in part (a) remain optimal?
Answers
Over the 0.33 and 0.375 range of values for the "bill passing" will country C remain optimal.
a. To calculate the estimated costs for each country, we must divide the cost by the likelihood of the bill being approved or rejected. Each country's expected cost is computed as follows:
Country A: 0.4 * 260 + 0.6 * 210 = 244
Country B: 0.4 * 320 + 0.6 * 160 = 256
Country C: 0.4 * 240 + 0.6 * 240 = 240
Country D: 0.4 * 275 + 0.6 * 210 = 250
Since country C has the lowest expected cost of $240,000, East West should choose this country for manufacturing.
b. Part a solution will continue to stay optimal as long as the estimated cost for country C is less than the estimated cost for the other countries. This means that if the "bill passing" range is such that country C still has the lowest estimated cost, the solution will remain optimal. To evaluate this range, we can find the "break-even points," which are the points at which the expected costs for country C equal the expected costs for countries A and D. The following is how these break-even points are calculated:
BE (country A) = (210 - 240) / (260 - 210) = 0.375
BE (country D) = (210 - 240) / (275 - 210) = 0.33
This means that as long as the probability of the bill passing is between 0.33 and 0.375, the solution of choosing country C will remain optimal.
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What advantage does the involvement of citizen scientists have in measuring biodiversity? Explain your answer.
Answers
Answer: citizen scientists are already providing large amounts of data for monitoring biodiversity, but they could do much more, according to a new study published in the journal Biological Conservation, which suggests that citizen science has the potential to contribute much more to regional and global assessments of biodiversity. Citizen scientists are regular people who provide data or input to science, for example by monitoring species in their community or examining satellite imagery for evidence of deforestation or land use change.
Step-by-step explanation:
A juice container haped like a cylinder ha a bae area of 100cm² and can hold 1500cm³ of juice. The height of the juice container id
Answers
The height of the juice container with a base area of 100cm² is 15 cm
What is the area?Is the measure of the space occupied by a body bounded by an environment called perimeter, the same is expressed in units of squared side. Example: ft^2, m^2
The base area of a cylinder is given by:
base area = π*r²
base area = 100 cm^2
100 = π * r^2
r^2 = 100 / π
r = √(100 / π)
The volume of a cylinder is given by:
volume = π*r²*h
1500 = π * [√(100 / π)]^2 * h
1500 = π* (100 / π) * h
1500 = 100h
Clearing the variable (h) height we have:
h = 1500 / 100
h = 15 cm
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What conditions must be met for the results of an ANOVA test to be reliable?
Answers
The conditions that must be met for the results of an ANOVA test to be reliable are Independence , Random Sampling , Large Sample Size and Normality .
The ANOVA (Analysis of Variance) is defined as a statistical method that is used to determine if there are significant differences among the means of two or more groups.
For the results of an ANOVA test to be reliable, the conditions that must be met are :
(i) Independence: The observations within each group should be independent of each other.
(ii) Normality: The data within each group should be approximately normally distributed.
(iii) Random Sampling: The samples within each group should be selected randomly from the population.
(iv) Large Sample Size: The sample size within each group should be large enough to provide a robust estimate of the population mean.
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which of these statements do you think is true?
(a) Exactly one of these statements is false
(b) Exactly two of these statements are false
(c) Exactly three of these statements are false
(d) Exactly four of these statements are false
answer:
a. (a)
b. (b)
c. (c)
d. (d)
Answers
All the given options are paradoxical, and it's not possible to determine their truth value as they depend on their own veracity.
The statement "Exactly one of these statements is false" can be referred to as the liar paradox. It is a classic example of self-referential statements, where the truth of the statement depends on its own veracity.
In this paradox, if the statement is true, then it must be false, and if the statement is false, then it must be true. Hence, this statement creates a paradox and it's impossible to determine its truth value.
In the case of options (b), (c), and (d), it's also not possible to determine their truth value as they too depend on the truth value of the other statements, which are paradoxical.
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assign ballradius with ballheight divided by 2.0. do not use the fraction 1.0 / 2.0; instead, divide ballheight directly by 2.0.
Answers
The C++ or Python code for the given problem is float ballRadius = ballHeight / 2.0;
To assign the value of ballRadius with ballHeight divided by 2.0, you can write the following code in a programming language such as C++ or Python:
float ballRadius;
float ballHeight = [some value];
ballRadius = ballHeight / 2.0;
This code uses the division operator (/) to divide ballHeight by 2.0, which results in a floating-point value. This value is then assigned to the variable ballRadius. By dividing ballHeight directly by 2.0, we are not using the fraction 1.0 / 2.0.
In detail, the operation ballHeight / 2.0 performs floating-point division, which means that the result will be a floating-point value with decimal places. The value of ballHeight is divided by 2.0, which is a floating-point constant. The result of this division is assigned to the variable ballRadius, which is also a floating-point value.
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A conical cup has a 10-cm diameter and is 12 cm deep. How much can this cup hold? (Continuation) Water in the cup is 6 cm deep. What percentage of the cup is filled? (Continuation)Dana takes a paper cone of the given dimensions,cuts it along a straight line from the rim to the vertex, then flattens the paper out on a table. Find the radius, the arc length, and the central angle of the resulting circular sector.
Answers
The radius, the arc length, and the central angle of the resulting circular sector is 13 cm
What is Radius?
A radius of a circle or sphere is any of the line segments connecting its center to its perimeter, and it is also their length in more recent usage. The term is derived from the Latin radius, which means both ray and spoke of a chariot wheel.
1) volume of the cone = 1/3[tex]\pi[/tex][tex]r^{2}[/tex]h
r = radius
h = height or depth
given, D = 10 cm
so r = 5 cm
v = 1/3*22/7*5*5*12
v = 100[tex]\pi[/tex]
2) for up to 6cm height
volume = ?
here in this triangle
triangle ΔAOC and ΔEDC are similar (have some shape as all three angle of both Δ are same
when two figure are similar the ratios of the length of their corresponding sides are equal
here, ΔAOC and ΔEDC
so r = 2.5cm
so volume when cup is 6cm deep
v1 = 1/3[tex]\pi r^{2} h[/tex]
v1 = 1/3 *[tex]\pi[/tex]*2.5*2.5*6
v1 = 12.5[tex]\pi[/tex]
length = [tex]r^{2}+h^{2}[/tex] pythogonus theorem
length = 13cm
arc length = angle (in radius)*radius
2*[tex]\pi[/tex]*5
=10[tex]\pi[/tex]
centre angle = 10[tex]\pi[/tex]/13 radiance
= 10 * 180 Degree/13
=138.46 degree
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Perform the following operation
and express the answer in
scientific notation.
Answers
The solution of the expression in scientific notation is 1.5 * 10^-2
How to evaluate the expressionFrom the question, we have the following parameters that can be used in our computation:
6.0 * 10^4 / 4.0 * 10^8
Divide 6 by 4
So, we have
6.0 * 10^4 / 4.0 * 10^8 = 1.5 * 10^4/10^8
Evaluate the final quotient
6.0 * 10^4 / 4.0 * 10^8 = 1.5 * 10^-2
Hence, the solution is 1.5 * 10^-2
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Can someone PLEASE help me? I don’t understand. Could you please show work?
Answers
Answer:
Step-by-step explanation:
Angle ABD plus angle DBC = 90. That's what that little square in the corner there means...a right angle which is 90 degrees. Using substitution,
3x + 15 + 2x = 90 and
5x + 15 = 90 and
5x = 75 so
x = 15. Now we need to plug in 15 for x in 2x to get 2(15) which is 30. Second choice down.
Sales tax is __________ the price
Answers
Sales tax is added to the price.
How to complete the blanksFrom the question, we have the following parameters that can be used in our computation:
The statement is about sales tax
As a general rule
sales tax are added to the price of the item that is being bought
So, the complete statement is Sales tax is added to the price.
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a fair coin is tossed 14 times. what is the probability that exactly 3 heads occur?
Answers
If a fair coin is tossed 14 times then the probability that exactly three head occur is 0.023 .
The Binomial Probability formula is used to find the Probability of getting exactly 3 heads in 14 tosses of a fair coin .
The formula is:
⇒ P(X=k) = ⁿCₓ × pˣ × (1-p)ⁿ⁻ˣ ;
where,
⇒ P(X=k) is the probability of getting exactly "x" heads in n tosses of coin ;
⇒ n (number of tosses) = 14
⇒ k (number of heads) = 3
⇒ p (probability of getting heads in a single toss) = 0.5 for a fair coin
Substituting in the values, we get:
⇒ P(X = 3) = ¹⁴C₃ * (0.5)³ * (1 - 0.5)¹¹
⇒ P(X = 3) = ¹⁴C₃ * (0.5)³ * (0.5)¹¹
On simplifying further ,
we get ;
⇒ 0.02221679 ≈ 0.023 .
Therefore , the probability of getting exactly 3 heads 0.023 .
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How heavy is 150 pounds? How much does 150 pounds weigh in kilograms? 150 lb to kg conversion.
Answers
The conversion of 150 pounds weight in kilograms 68.039.
What is meant by weight?
The gravitational force that pulls a body toward the earth or another celestial body; it is equal to the mass multiplied by the local gravitational acceleration.Weight, which is expressed in newtons, is a unit of measurement for the gravitational force acting on an object. The weight of a bird with a mass of 15 g changes with the strength of the gravitational force acting on it, and would differ significantly if it were measured, for instance, on the Moon rather than on Earth.On Earth compared to the Moon, an object would weigh differently as a result of gravity. The following is an explanation of the weight formula: Weight is calculated as mass multiplied by gravity. W = mg is the formula for this.To learn more about weight refer to
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The value of the digit 2 in the number 25.381 is 10 times greater then the value of the digit 2 in which of the following numbers
Answers
The value of the digit 2 in the number 25.381 is 10 times greater than the value of the digit 2 in 52.
The correct option is A.
What is a place value?Place value, which is related to a digit's location in a number, is the amount that each digit is worth.
Given:
We have a decimal number 25.381.
From the given choices;
We have number 52.
In the number 52:
The place value of 2 is 2.
The value of the digit 2 in the number 25.381 is 10 times greater than the value of the digit 2 in 52.
Therefore, the number is 52.
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The complete question:
The value of the digit 2 in the number 25.381 is 10 times greater than the value of the digit 2 in which of the following numbers:
A) 52.
B) 25534.675
from largest to smallest, the correct order is:group of answer choicessample, sampling frame, population.
Answers
Population - - > Sampling Frame - - > Sample - - > Individual being surveyed is the order from largest to smallest.
The population is the largest as they include all units or subject of interest in a particular study or experiment.
Next is the sampling frame which is the list or compilation of all subjects which can form part of a sample. It is a compilation of all elements in the population from which the sample can be drawn.
The sample is a subset of the population of population, usually selected at random and it is representative of the population.
The individual surveyed represents a single subject or observation from the chosen sample.
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The dot plot represents the distribution of wages earned during a one-week period by 12 collage students.
Answers
From the line dot plot of 12 college students wages,
The Mean is $118.25
The Median is $118.
What is a mean?It is the average value of the set given.
It is calculated as:
Mean = Sum of all the values of the set given / Number of values in the set
We have,
From the dot plot.
Weekly wages = 112, 113, 116, 116, 116, 118, 118, 119, 119, 124, 124, 124.
Now,
Mean = Sum of all the values / Number of values
= (112 + 113 + 116 + 116 + 116 + 118 + 118 + 119 +119 + 124 +124 +124) / 12
= 118.25
Median = Mid value from the wages.
= 118
Thus,
The Mean is $118.25
The Median is $118.
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Let x stand for the number of minutes spent waiting in line for a rollercoaster at an amusement park. 81 people are sampled at a time. The sample mean is 18 minutes and the sample standard deviation is 0. 5 minutes.
Answers
The population mean (μ) is estimated to be: μ = 18 minutes
In this problem, we are given a sample of 81 people who waited in line for a rollercoaster at an amusement park. We are also given the sample mean (18 minutes) and the sample standard deviation (0.5 minutes).
To estimate the population mean (μ), we use the sample mean (18 minutes). Since the sample mean is a good estimate of the population mean, the estimated population mean (μ) is 18 minutes.
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The expected population mean () is: = 18 minutes.
Additionally, the sample mean (18 minutes) and sample standard variation are provided (0.5 minutes).
We use the sample mean to determine the population mean (). (18 minutes). The expected population mean () is 18 minutes because the sample mean is a reliable indicator of the population mean.
select the correct answer .
Which piecewise function is shown on the graph?
Answers
A piecewise function which is shown on the graph include the following: A. piecewise function A.
What is a graph?In Mathematics, a graph can be defined as a type of chart that is typically used for the graphical representation of ordered pairs on both the horizontal and vertical lines of a cartesian coordinate, which are the x-coordinate (x-axis) and y-coordinate (y-axis) respectively.
Based on the graph shown above, we can evaluate the piecewise function based on the following domains (input values or independent values);
For the domain x ≤ -2, the value of y (y-value) is equal to 5. Additionally, for the domain -2 < x < 1,we can logically deduce that the function is a polynomial, which implies that it must have this ordered pair (0, -5):
For -2 < x < 1, when x is equal to 0 and y is equal to -5;
y = x² ± 5
For the domain x ≥ 1, we know that, when y is equal to 0, x would lie between 3 and 4;
y = 2^{x - 2} - 3
When y = 0, the value of x is given by:
0 = 2^{x - 2} - 3
2^{x - 2} = 3
x = 3.584.
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ALGEBRA II
Find the angle measured to the nearest degree
Answers
The measure of the angle X for the trigonometric ratio of sine X equal to 0.7547 is 49° to the nearest degree.
What are trigonometric ratiosThe trigonometric ratios involves the relationship of an angle of a right-angled triangle to ratios of two side lengths. Basic trigonometric ratios includes; sine cosine and tangent.
For the sine of X equal to 0.7547, we can make x the subject by finding the sine inverse of 0.7547 as follows:
sin X = 0.7547
X = sin⁻¹(0.7547)
X = 48.9992
Therefore, the measure of the angle X for the trigonometric ratio of sine X equal to 0.7547 is 49° to the nearest degree.
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In a survey of youths, it was found that 85% like to do farming in their village, 60% like to go for foreign employment.If 5% of them did not like both of them then,
1)Show that above information in a Venn diagram.
2)What percent of use who like to do farming in their village only?
3) What percent of youths like foreign employment only?
4) What percent of you like both of the jobs?
Answers
On solving the provided question, we can say that by percentage the proportion of pupils who participate in either cricket or volleyball.
What is percentage?A percentage in mathematics is a figure or ratio that is stated as a fraction of 100. The abbreviations "pct.," "pct," and "pc" are also occasionally used. It is frequently denoted using the percent symbol "%," though. The amount of percentages has no dimensions.
In a study conducted at a school, 300 students preferred volleyball, 250 preferred cricket, and 110 preferred playing both sports. Calculate the following using a Venn diagram: a. the number of pupils who play cricket exclusively.
b. the proportion of pupils who participate in either cricket or volleyball.
After their SEE, a survey found that 120 students desired to be both an engineer and a doctor, while 190 students wanted to be both. Draw a Venn-diagram and count the number of students who said they wanted to be neither of them if 300 students were surveyed.
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find the following limit or state that it does not exist. x-9
Answers
The limit of the function [tex]\lim_{x \to9}[/tex] [( x² - 81 ) / ( x - 9 ) ] is equal to 18.
[tex]\lim_{x \to9}[/tex] [( x² - 81 ) / ( x - 9 ) ]
Substitute the limit x tends to 9 in the function we have,
= ( 9² - 81 ) / ( 9 - 9 )
= ( 81 - 81 ) / 0
= 0 /0
0 /0 form is not defined term.
Simplify the function before substituting the limit we have,
[tex]\lim_{x \to9}[/tex] [( x² - 81 ) / ( x - 9 ) ]
= [tex]\lim_{x \to9}[/tex] [ ( x ² - 9² ) / ( x - 9 ) ]
= [tex]\lim_{x \to9}[/tex] [ ( x - 9 ) ( x + 9 ) / ( x - 9 ) ]
= [tex]\lim_{x \to9}[/tex] ( x + 9 )
= 9 + 9
= 18
Therefore, the value of the limit for the function [tex]\lim_{x \to9}[/tex] [( x² - 81 ) /( x - 9) ] is equal to 18.
The given question is incomplete, I answer the question in general according to my knowledge:
Find the following limit or state that it does not exist.
[tex]\lim_{x \to9} \frac{(x^{2} - 81)}{(x - 9)}[/tex].
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A right square pyramid has a volume of 12 cubic centimeters. If the height remains fixed but the sides of the base are multiplied by 3, what is the volume of the new pyramid?
A. 36 cm
B. 48 cm
C. 108 cm
D. 72 cm
Answers
If the height of a square pyramid remains fixed while its sides of the base is multiplied by 3, then the volume of the new pyramid is 108 cm³ (option C)
The volume of a square pyramid is given by:
V = A . h = a² . h
Where;
A = the area of the base = a²
h = height of the pyramid
a = sides of the base
In this problem,
V = 12 cm³
a² . h = 12 .... (equation 1)
Now, the sides of the base are multiplied by 3. Hence, the new volume will be:
V = (3a)² . h
= 9 a² . h
from equation 1 we know that a² . h = 12. Hence,
V = 9 x 12 = 108 cm³
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93 x 10 with the power of 3
Answers
Answer:93000
—————————————-
93 x 10 = 930
930 x 100 = 93,000
write a in the form without finding t and n.
Answers
tangential acceleration a in the form without finding t and n is |a|= T+ t N
The tangential acceleration is a measure of the rate of change in the magnitude of the velocity vector, i.e. speed, and the normal acceleration are a measure of the rate of change of the direction of the velocity vector.
r(t)=(cost+ t sin t )i +( sin t−t cost)j
first find the particle's velocity.
[tex]v=dr/dt\\=(−sint+sint+tcost)i^+(cost−cost+tsint)j^\\\\ \\=(tcost)i^+(tsint)j^[/tex]
find the speed.
|v|=[tex]\sqrt{t^{2} cos^{2}t+ t^{2} sin^{2}t }[/tex]
= √t^2
=t
When t>0 , |t| simply becomes t .
We know that a T= [tex]\frac{d}{dt}[/tex]|v|
, which we can use to find that [tex]\frac{d}{dt}[/tex](t)=1
Now that we know a T , we can use it to find a N
a=(cost−t sin t ) i+(sin t +t cos t)j
|a|^2=t^2+1
a N=√(t^2+1) -1
= t
By substituting this back into the original definition, we find that
|a|=(1)T+(t)N=T+ t N
a in the form without finding t and n is |a|= T+ t N
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Raven just purchased a gumball machine. Each compartment has the
dimensions of 8 inches by 6 inches by 15 inches. Assuming the vending
machine uses Gumballs that are approximately spherical and 1 inch in
diameter, how many gumballs did she order if each machine has 3
compartments and she ordered 25 machines? (Hint: Packing spheres in a
rectangular prism usually take up 190% of the volume of the spheres.)
Round your answer to the nearest whole number.
O A. 2171
B. 10,856
C. 32,568
D. 54,280
*
10 points
Answers
Answer:
The answer is C. 32,568. Assuming that the gumballs are 1 inch in diameter and packed in a rectangular prism, each compartment can hold approximately 190% of the volume of the spheres. Therefore, each compartment can hold approximately 7,560 gumballs. Since there are 3 compartments per machine and 25 machines, the total number of gumballs that Raven ordered is 32,568.
Step-by-step explanation: