Diameter is 9 inch so the radius is 9/2=4.5inch
Part A: 2πr=28.26inch
π=28.26/(2r)
π=28.26/(2*4.5)=3.14
Part B: πr^2=63.585inch
π=63.585inch/(4.5inch)^2
π=3.139753086
Part C: Both of the answers are correct but Part B is more percise because it has more significant figures.

6 0

2 years ago

Read 2 more answers

Kaley bought an oven from a rental center for $728.44. She makes 12 monthly payments of $74.91 with her credit card. The rental

Kruka [31]

Here is a sentence describing what Kaley paid for.

monthy payments + credit card fee per month + 4 late charges.

($74.91 x 12) + ($2.75 x 12) + ($35 x 4)

$898.92 + $33 + $140 = $1071.92

Kaley paid a total of $1071.92 to rent the oven.

6 0

3 years ago

Please assist me with the missing answers. Scores on the final exam in Ms. Meyer's statistics class follow a normal distribution

Galina-37 [17]

Answer: Ron's z-score is +1.2.

B. 1.2 standard deviation above the mean .

Step-by-step explanation:

Let X deontes the scores of the final exam

Given : Ms. Meyer's statistics class follow a normal distribution with Mean = 82

standard deviation =5.1

Formula : $z=\dfrac{X-Mean}{Standard \ deviation}$

Ron scored 88 on the final.

So, put x=88

$z=\dfrac{88-82}{5.1}=\dfrac{6}{5.1}\approx1.2$

Ron's z-score is +1.2.

Also, 88= 86+(1.2 x 5.1) = Mean +1.2 x (standard deviation)

i.e. This means that Ron's final score is 1.2 standard deviation above the mean .

6 0

2 years ago