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alexira [117]
3 years ago
7

Help pls help pls help pls

Mathematics
1 answer:
Mariulka [41]3 years ago
3 0

Answer: 3900\pi ft^3

if you use the formula on how to find the volume of a cone

V=\pir^2*h/3

you will insert 30 where the r is, 13 in where h is, after you just solve that and your answer would be 3900\pi ft^3

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A sink has two faucets: one for hot water and one for cold water. The sink can be filled by a cold water faucet in 3 minutes. If
iragen [17]

Answer: 6\ minutes

Step-by-step explanation:

You can use the following formula:

\frac{T}{A}+\frac{T}{B}=1

You can say that "T" is the time (in minutes) for both faucets working together, "A" is the time (in minutes) for cold water faucet working alone and "B" is the time (in minutes) for hot water faucet working alone.

Based on the data given in the exercise, you can identify that:

T=2\\A=3

Therefore, substituting these values into the formula and solving for "B", you get that this is:

\frac{2}{3}+\frac{2}{B}=1\\\\\frac{2}{B}=1-\frac{2}{3}\\\\\frac{2}{B}=\frac{1}{3}\\\\2=\frac{1}{3}B\\\\2*3=B\\\\B=6

3 0
3 years ago
There is a pie eating contest with 14 participants. There are 29 pies that are all eaten. Which of the following best describes
kotegsom [21]
Hmm...I tried to divide 29 by 14, and I got 2.07142857143.... Does it let you round the decimal..?
3 0
2 years ago
Use Euler's Formula to find the missing number.<br>Faces: 20<br>Edges: 30<br>Vertices:​
adoni [48]

Answer:

V=12

Step-by-step explanation:

Faces: 20 Edges: 30

Write the Euler's formula for 3-dimensional figures

F+V=E+2

Substitute some variables for their known values

20+V=30+2

Add the numbers on the right side of the equation

20+v=32

Subtract 20 on both sides

20-20+V=32-20

Subtract

V=32-20

Number of Vertices

V=12

7 0
3 years ago
The table below shows the cube roots of different numbers:
Mila [183]

part A)

\bf \begin{array}{|c|cccccc|ll} \cline{1-7} x&8&27&64&125&&x\\ \cline{1-7} y&\stackrel{\sqrt[3]{8}}{2}&\stackrel{\sqrt[3]{27}}{3}&\stackrel{\sqrt[3]{64}}{4}&\stackrel{\sqrt[3]{125}}{5}&&\sqrt[3]{x} \\ \cline{1-7} \end{array}~\hspace{10em}y = \sqrt[3]{x}

part B)

f(x) = 10 + 20x

so if you rent the bike for a few hours that is

1 hr.............................10 + 20(1)

2 hrs..........................10 + 20(2)

3 hrs..........................10 + 20(3)

so the cost is really some fixed 10 + 20 bucks per hour, usually the 10 bucks is for some paperwork fee, so you go to the bike shop, and they'd say, ok is 10 bucks to set up a membership and 20 bucks per hour for using it, thereabouts.

f(100) = 10 + 20(100) => f(100) = 2010.

f(100), the cost of renting the bike for 100 hours.

4 0
2 years ago
Find the exact values of the six trigonometric functions of the angle shown in the figure.
lana66690 [7]

Answer:

X

G

D

D

D

E

E

E

EW

G

H

F

I

U

TD

SQ

U

W

4

FW

S

W

WS

W

3 0
2 years ago
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