1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
valentina_108 [34]
3 years ago
7

One circle has a diameter of 6 inches. A larger circle has a diameter that is 4 times the diameter of the circle. what is the ra

tio of the area of the smaller circle to the larger circle?
A. 2:3
B. 1:6.4
C. 1:16
D 1:64
Mathematics
1 answer:
harina [27]3 years ago
5 0

Answer:

C, 1 : 16

Step-by-step explanation:

Small Circle

The radius is half of the diameter. 3 inches.

π×r²=A

We'll use 3.14 for pi.

3.14×9

28.26 in²

Bigger Circle

6×4= 24

So the diameter is 24. The radius is 12.

3.14×12²

3.14×144

452.16 in²

Let's divide.

452.16÷ 28.26

= 16

Therefore, the answer is C, 1 : 16.

Hope this helps, please mark brainliest if possible :)

You might be interested in
Find the coordinates of point z such that the ratio of fz to zd is 5;3
Vilka [71]

The point such that the coordinate is 5;3 is (14, 0)

<h3>Midpoint of coordinates using ratio</h3>

The formula for finding the midpoint of a line in the ratio m:n is expressed as:

M(x, y) = {(mx₁+nx₂)/2, (my₁+ny₂)/2,}

Given the coordinate of G and D on the line as G(5, 0) and D(1,0)

Since there is no y-axis, hence;

x = 5(5)+1(3)/2

x = 25+3/2

x = 28/2

x =14

Hence the point such that the ratio is 5;3 is (14, 0)

Learn more on midpoint of a line here: brainly.com/question/5566419

#SPJ1

8 0
2 years ago
A number plus 16 times its reciprocal equals 4. Find all possible values for the number.(My question was not answered correctly
Gwar [14]

Answer:

-8±√17 and -8±6√2

Step-by-step explanation:

1. x+16/x=4, x^2+16-4x=0. x=-8±√17

2. x+16/x=8, x^2+16-8=0. x=-8±6√2

6 0
2 years ago
Do you think inequalities or equations are used more in everyday life? Justify your answer. In your answer include literal equat
nevsk [136]
Yes, I do think that inequalities or equations are used more in everyday life.
5 0
3 years ago
A pyramid and a cone are both 10 centimeters tall and have the same
Over [174]

Answer:

D the horizontal cross-section of the pyramid and cone at the same height must have the same area

7 0
3 years ago
Read 2 more answers
An automobile manufacturer has given its van a 31.3 miles/gallon (MPG) rating. An independent testing firm has been contracted t
Fynjy0 [20]

Answer:

z=\frac{31.1-31.3}{\frac{1.3}{\sqrt{140}}}=-1.82  

The p value for this case would be given by:

p_v =2*P(z  

For this case since the p value is higher than the significance level we have enough evidence to FAIL to reject the null hypothesis and we can conclude that the true mean is not significantly different from 31.3 MPG

Step-by-step explanation:

Information given

\bar X=31.1 represent the sample mean  

\sigma=1.3 represent the population standard deviation

n=140 sample size  

\mu_o =31.3 represent the value that we want to test  

\alpha=0.02 represent the significance level for the hypothesis test.  

z would represent the statistic

p_v represent the p value

Hypothesis to test

We want to test if the true mean is equal to 31.3 MPG, the system of hypothesis would be:  

Null hypothesis:\mu =31.3  

Alternative hypothesis:\mu \neq 31.3  

Since we know the population deviation, the statistic is given by

z=\frac{\bar X-\mu_o}{\frac{\sigma}{\sqrt{n}}} (1)  

Replacing we got:

z=\frac{31.1-31.3}{\frac{1.3}{\sqrt{140}}}=-1.82  

The p value for this case would be given by:

p_v =2*P(z  

For this case since the p value is higher than the significance level we have enough evidence to FAIL to reject the null hypothesis and we can conclude that the true mean is not significantly different from 31.3 MPG

4 0
3 years ago
Other questions:
  • Find the mean for this data set: 19, 12, 9, 6, 12, 8, 18, 12, 14, 10
    13·2 answers
  • I’m Confused On The Question
    13·1 answer
  • Can anyone inbox me​
    7·2 answers
  • As part of the National Health and Nutrition Examination Survey, subjects were asked how long they slept the preceding night, an
    14·1 answer
  • The sum of 2 numbers is 25. Their product is 150 find them.
    15·2 answers
  • Find the lateral surface area and the total surface area of the cylinder . Round to the nearest inch
    9·1 answer
  • When Camden runs the 400 meter dash, his finishing times are normally distributed with a mean of 65 seconds and a standard devia
    5·1 answer
  • 30 POINTS PLEASE HELP Solve 2 (e)^3t =10 for t. Round to three decimal places
    10·1 answer
  • Fill in the blanks to complete the steps and solve the equation in the image attached.
    7·1 answer
  • Look at the picture.....
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!