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
GaryK [48]
3 years ago
15

Find the area of the following circle. (Round answer to the nearest hundredth.) d = 15 in area = square inches circumference = i

nches
Mathematics
1 answer:
alisha [4.7K]3 years ago
8 0

Answer:

314.16

Step-by-step explanation:

Since the diameter is 15 and the radius is only half of the diameter the radius is ten. Now the the equation to find area in a circle is 3.14 (or the pi symbol on your calculator) r squared which would mean 3.14*10^2 which would give you your answer

You might be interested in
Divide and answer.<br> 2.92 ÷ 10
Leni [432]

The Answer to your problem is:

0.292

8 0
3 years ago
Read 2 more answers
A survey was conducted in the United Kingdom, where respondents were asked if they had a university degree. One question asked,
katovenus [111]

Answer:

z=\frac{0.121-0.0892}{\sqrt{0.101(1-0.101)(\frac{1}{373}+\frac{1}{639})}}=1.620  

p_v =2*P(Z>1.620)=0.105  

If we compare the p value and using any significance level for example \alpha=0.05 always p_v>\alpha so we can conclude that we have enough evidence to FAIL to reject the null hypothesis, and we can say the the two proportions are not statistically different at 5% of significance

Step-by-step explanation:

Data given and notation  

X_{1}=45 represent the number of correct answers for university degree holders

X_{2}=57 represent the number of correct answers for university non-degree holders  

n_{1}=373 sample 1 selected

n_{2}=639 sample 2 selected

p_{1}=\frac{45}{373}=0.121 represent the proportion of correct answers for university degree holders  

p_{2}=\frac{57}{639}=0.0892 represent the proportion of correct answers for university non-degree holders  

z would represent the statistic (variable of interest)  

p_v represent the value for the test (variable of interest)

Concepts and formulas to use  

We need to conduct a hypothesis in order to check if the proportions are different between the two groups, the system of hypothesis would be:  

Null hypothesis:p_{1} = p_{2}  

Alternative hypothesis:p_{1} \neq p_{2}  

We need to apply a z test to compare proportions, and the statistic is given by:  

z=\frac{p_{1}-p_{2}}{\sqrt{\hat p (1-\hat p)(\frac{1}{n_{1}}+\frac{1}{n_{2}})}}   (1)

Where \hat p=\frac{X_{1}+X_{2}}{n_{1}+n_{2}}=\frac{45+57}{373+639}=0.101

Calculate the statistic

Replacing in formula (1) the values obtained we got this:  

z=\frac{0.121-0.0892}{\sqrt{0.101(1-0.101)(\frac{1}{373}+\frac{1}{639})}}=1.620  

Statistical decision

For this case we don't have a significance level provided \alpha, but we can calculate the p value for this test.  

Since is a one side test the p value would be:  

p_v =2*P(Z>1.620)=0.105  

If we compare the p value and using any significance level for example \alpha=0.05 always p_v>\alpha so we can conclude that we have enough evidence to FAIL to reject the null hypothesis, and we can say the the two proportions are not statistically different at 5% of significance

7 0
3 years ago
Can u help me do this
chubhunter [2.5K]
There will be 2 books left over if he fills each box.
7 · 4 = 28
30 - 28 = 2

Good Luck
5 0
3 years ago
The members of a drama club sold tickets to a school play.
Lelechka [254]

Answer:

Step-by-step explanation:

28*5 115 sub 115 from 800 then divide 685 by 5 then add 7 into that number 28 times

6 0
3 years ago
Jaelyn works 6 hours per day on Thursday, Friday and Saturdays each week. She
VladimirAG [237]

Answer:

1,363.5

Step-by-step explanation:

$15.15 ×6 =90.9(for Thu,Fri,sat)

15.15×24=363.6(for other days)

90.9×3=272.7(total for Thursday, Friday and Saturdays)

363.6× 3( include other days like Monday Tuesday and Wednesday)

1,090.8

therefore total for 6hours days and full days

1,090.8+272.7=1,363.5

7 0
2 years ago
Other questions:
  • Two search teams spot a stranded climber on a mountain. The first search team is 0.5 miles from the second search team. If the a
    8·1 answer
  • Does anyone know if that little ‘o’ by the ‘V’ means it’s a base of 10?
    11·1 answer
  • Find the mean, median, mode and range. Round the mean to the nearest tenth.
    7·1 answer
  • 1,500 people tried a cream. Nine people had a reaction. What percent of people had a reaction?
    12·1 answer
  • jesse took out a $14,000 car loan for 5 years at a 7.2% interest rate. find Jesse’s total payment amount for his loan.
    14·1 answer
  • A cone has a diameter of 3 inches. The cone holds 12 cubic inches of water, to the nearest inch.What is the height of the cone?
    9·1 answer
  • ÍNDICE DE MASA CORPORAL NM TIPO II
    13·1 answer
  • If the point (-1,2) lies on the graph of y=f(x), then a point on the graph of y=-2f(x)+5
    14·1 answer
  • A game decreased in price by 1/3. After the reduction it was priced at £12. What was the original price of the game?​
    5·2 answers
  • What is the solution to the following equation? 12 + 3x+7 = 0
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!