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2 years ago

8

A circle with radius of 3 sits inside a circle with radius of 7. What is the area of the shaded region? Please Help I REALLY do

need help :(

1 answer:

krek1111 [17]2 years ago

5 0

I believe the answer you're looking for is 40<span>π.</span>

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What is 1/2 plus 9/10

Irina18 [472]

Find the common denominator first--> 10
1/2= ?/10 ?=5
so 5/10 +9/10 (Now you just add the numerators and keep the common denominator the same)

14/10 and if you want to simplify it, simply divide both the top and bottom by 2

answer = 7/5

3 0

3 years ago

Read 2 more answers

Calculate the variance for the data set. Round your answer to the nearest hundredth. Show all of your steps. { 10 , 19 , 21 , 28

GrogVix [38]

Answer:

Variance of the given data = 31.143

Explanation:

Variance, $\sigma^2=\frac{1}{n} \sum_{i=1}^{n}(x_i-\mu)^2$ , where n is the number of observations, μ is the mean and $x_i$ is the observations made.

Number of observations, n = 7

Mean, μ = $\frac{10+19+21+28+12+20+16}{7} = 18$

$\sum_{i=1}^{n}(x_i-\mu)^2=(10-18)^2+(19-18)^2+(21-18)^2+(28-18)^2+(12-18)^2+(20-18)^2+(16-18)^2\\ \\ \sum_{i=1}^{n}(x_i-\mu)^2=64+1+9+100+36+4+4=218$

$\sigma^2=\frac{1}{n} \sum_{i=1}^{n}(x_i-\mu)^2=\frac{218}{7} =31.143$

So variance of the given data = 31.143

8 0

2 years ago

Mary and Jim have tickets to a concert. Mary's ticket number is one less than Jim's ticket number. The product of their numbers

erastova [34]

Mary - M
<span>Jim - J </span>

<span>Mary's ticket number is one less than Jim's ticket number. </span>
<span>J - 1 = M </span>

<span>The product of their numbers is 812 </span>
<span>M * J = 812 </span>

<span>plus first equation into 2nd </span>
<span>(J - 1) J = 812 </span>
<span>J^2 - J - 812 = 0 </span>
<span>(J - 29) (J + 28) = 0 </span>
<span>J = 29 or -28, 29 cuz you can't have negative for question. </span>
<span>J = 29 </span>

<span>plus 29 in first equation, </span>

<span>29 - 1 = M </span>
<span>28 = M </span>

<span>Mary's ticket number is 28 and Jim is 29</span>

6 0

3 years ago

Read 2 more answers

2. Robert has three jobs. He worked at Young's Grocery and earned $5,805. He was a waiter at the A & B Restaurant and earned

antiseptic1488 [7]

Answer:

Robert paid $4,603.6 in Social Security.

Step-by-step explanation:

Robert total earnings:

$5,805 at Young's Grocery.

$12,445 at A&B Restaurant.

$56,002 at CCD Communications.

So his total earnings are of:

5805 + 12445 + 56002 = $74,252

How much did Robert pay in Social Security?

6.2%, that is, 0.062 of $74,252. So

0.062*74252 = $4,603.6

8 0

2 years ago

What is the solution set of the quadratic inequality (X^2)-5≤0

Pepsi [2]

The 4th option would be correct.

{X | - Root 5 < x < Root 5 }

5 0

3 years ago