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tensa zangetsu [6.8K]

3 years ago

6

Solve for π: V= 2πr^2 + 2πrh

1 answer:

crimeas [40]3 years ago

3 0

Answer:

π = V/(2r²+2rh)

Step-by-step explanation:

"Solving" for something means to isolate it on one side of an equation. Because both terms on the right side of the equation have π in common, we can factor it out. Then from there, you just divide the rest of it on both sides to isolate π. It should look like this:

V=2πr^2 + 2πrh

V=π(2r² + 2rh)

V/(2r² + 2rh)=π

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Natali [406]

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3 0

3 years ago

Mrs. fam bought 4 1/4 pounds of ham for $17. At rate,What is the cost of 1 pound of sliced ham?

vova2212 [387]

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2 years ago

A vending machine operator has determined that the number of candy bars sold per week by a certain machine is a random variable

docker41 [41]

Answer:

The answer is below

Step-by-step explanation:

Let Y represent the profit per day, and x represent the number of bar sold per day. Hence:

Y = 0.25x - 2

a) The mean is given as:

$\mu_y=E(Y)=E(0.25X-2) = 0.25E(X)-2\\\\But\ E(X)=mean\ of\ machine=125. Hence:\\\\E(Y)=0.25(125)-2=29.25\\\\E(Y)=\$29.25$

b) The standard deviation of y is:

$\sigma_y=var(0.25X-2)\\\\\sigma_y=0.25\sigma(X)\\\\but\ \sigma_X=7,hence:\\\\\sigma_y=0.25(7)=1.75\\\\\sigma_y=\$1.75$

6 0

2 years ago

3(4a + 2) = 2(a - 2)?

Likurg_2 [28]

Answer:

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Step-by-step explanation:

8 0

2 years ago

8 3/5 - ( 1 1/2 x 3 1/5 )

Ber [7]

8 3/5 - (1 1/2* 3 1/5)
= 43/5 - 24/5
= 19/5
= 3 4/5

Final answer: 3 4/5~

6 0

2 years ago