All categories

3 years ago

Use the picture of the circle below to find the area of the circle. Use 3.14 for π and show your work.

Mathematics

1 answer:

Dominik [7]3 years ago

7 0

Answer:

254.34 in^2

Step-by-step explanation:

To calculate the Area of Circle is πr^2

r is the radius of the circle

In this problem, the diameter is given which is 18 in. To find the radius you have to divide the diameter by 2.

18/2 = 9 in is our radius

Area of Circle = π9^2

= 3.14*81

= 254.34 in^2

You might be interested in

Can someone pls help me

makkiz [27]

Answer:

good morning going to have what does a little but let beerus and fly away and the longest in the detailed and strong and little longer a baby to fly away

8 0

3 years ago

Colton makes the claim to his classmates that less than 50% of newborn babies born this year in his state are boys. To prove thi

alexdok [17]

Answer:

Null hypothesis: $p \leq 0.5$

Alternative hypothesis: $p > 0.5$

The statistic is given by:

$z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}}$ (1)

Replacing we got:

$z=\frac{0.512-0.5}{\sqrt{\frac{0.5(1-0.5)}{344}}}=0.445$

Step-by-step explanation:

Information given

n=344 represent the random sample taken

X=176 represent the anumber of boys babies

$\hat p=\frac{176}{344}=0.512$ estimated proportion of boys babies

$p_o=0.5$ is the value that we want to check

z would represent the statistic

$p_v$ represent the p value

Hypotheis to verify

We want to check if the true proportion of boys is less than 50% then the system of hypothesis are .:

Null hypothesis: $p\leq 0.5$

Alternative hypothesis: $p > 0.5$

The statistic is given by:

$z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}}$ (1)

Replacing we got:

$z=\frac{0.512-0.5}{\sqrt{\frac{0.5(1-0.5)}{344}}}=0.445$

8 0

3 years ago

How do I solve 6x+3=18. And 5(4x-5)=155

vazorg [7]

6x+3=18
subtract 3 from both sides
6x=15
divide both sides by 6
x=2.5
5(4x-5)=155
distribute the 5
20x-25=155
add 25 to both sides
20x=180
divide both sides by 20
x=9

8 0

4 years ago

Read 2 more answers

A and b have the same directions, and they both have a magnitude of 6. What must be true about

vodka [1.7K]

Answer:

Step-by-step explanation:

Both vectors have the same length/ magnitude, so they are equal and since they are going the same direction, they're also parallel and won't touch.

(Just took the quiz btw)

7 0

3 years ago

Write an expression that could be used to calculate the perimeter of this square.

denpristay [2]

X times 4. x + x + x+ x. x would be the length of each side

6 0

3 years ago