2 years ago

V=pir2h. Solve for pi

Mathematics

1 answer:

Fynjy0 [20]2 years ago

5 0

$v = \pi {r}^{2} h \\ \\ \pi = \frac{v}{ {r}^{2}h }$

I hope I helped you^_^

You might be interested in

Tommy took one of his friends out to dinner. The dinner cost $100 and he paid 3% sales tax. If Tommy left an 18% tip on the $100

nalin [4]

Answer:

121

Step-by-step explanation:

3% of 100 = 3

18% of 100 = 18

100+3+18=121

6 0

3 years ago

Read 2 more answers

Mia buys a watch while visiting her cousin in California. The sales tax in California is 10.25%.

netineya [11]

Answer:

$400

Step-by-step explanation:

<u>Let the watch price be x, then we have:</u>

10.25% of x = 41 or
0.1025x = 41

<u>Solve for x</u>

x = 41/0.1025
x = 400

8 0

2 years ago

Read 2 more answers

Find the general solution of (x+3)y’=2y

gregori [183]

Answer:

$y=C(x+3)^2$

Step-by-step explanation:

We are given:

$\displaystyle (x+3)y^\prime=2y$

Separation of Variables:

$\displaystyle \frac{1}{y}\frac{dy}{dx}=\frac{2}{x+3}$

So:

$\displaystyle \frac{dy}{y}=\frac{2}{x+3} \, dx$

Integrate:

$\displaystyle \int\frac{dy}{y}=\int\frac{2}{x+3}\, dx$

Integrate:

$\displaystyle \ln|y|=2\ln|x+3|+C$

Raise both sides to e:

$|y|=e^{2\ln|x+3|+C}$

Simplify:

$|y|=(e^{\ln|x+3|})^2\cdot e^C$

So:

$|y|=C|x+3|^2$

Simplify:

$y=\pm C(x+3)^2=C(x+3)^2$

5 0

3 years ago

You spin the spinner and flip a coin. Find the probability of the compound event. The probability of spinning a prime number and

elixir [45]

The probability of spinning a prime number and not flipping heads will be given as follows:
P(Prime)*P(Tails)
P(Prime)=3/5
P(Tails)=1/2
Thus
P(Prime) and P(Tails)
=3/5×1/2
=3/10

3 0

3 years ago

Read 2 more answers

Solve for x: 4 over 5 x + 4 over 3 = 2x x = __________________ Write your answer as a fraction in simplest form. Use the "/" sym

alexgriva [62]

Let's see.

4x/5 + 4/3 = 2x

First we have to make each denominator the same, so I'll multiply 4x/5 by 3/3, 4/3 by 5/5, and 2x by 15/15

Now we have 12x/15 + 20/15 = 30x/15

With everything in the same denominator we can solve the new equation of
12x + 20 = 30x

20 = 18x

10 = 9x

X= 10/9

5 0

2 years ago

Read 2 more answers