A cylindrical water tank has a diameter of 36 centimeters and a height of 100 centimeters.The volume is 1290π cubic centimeters. What is the heightvof the water level un the tank?

Answers

Answer 1

Answer: d=36cm
r=18cm

volume=1290pi
$\pi {r}^(2) h = 1290\pi$
$18 * 18 * h = 1290$
h=1290/ 18×18
h= 1290/324=3.98cm

answer is 3.98cm

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There are 3 consecutive integers that add up to 9 which integers are they?

You have eight coins in your pocket that equal $1.02. What are the eight coins?

Answers

2 pennies
3 quarters
2 dimes
1 nickel

Which equation does NOT belong with the other 3? Explain your reasoning.Choices below;
x+3=-1
x+1=-5
x-2=-6
x-9=-13
#4 under vocab section

Answers

x-9=-13 because the 9 doesn't do with any of the others after the variable

the fourth one x-9=13 because the 9 dosen't go with any of the other varibles so i agree with vontae.

Which of the following options have the same value as 65%, percent of 20?

Answers

This question is incomplete. Hereis the complete question:

Which of the following options have the same value as 65% of 20?

(A) 0.65⋅20 (B) 65/100 divided by 20 (C) 65/20 * 100 (D) 65 * 20

Answer:

The correct answer is option (A) 0.65⋅20

Step-by-step explanation:

In this case they are asking us for an expression that is equivalent to 65% of 20. They are not asking us what is the value of that operation.

When we do a percentage calculation we can do it in two ways.

Let's see each one of them:

. (65 * 20): 100 =

1300: 100 = 13

. 0.65. 20 = 13

As we can see both ways we get the same result.

Given this information we can say that the correct answer is option A.

Answer:

Step-by-step explanation:

You find out what is one percent then multiply from there

Express 36 minutes as a fraction of an hour

Answers

Answer:

36 min is 3/5 of and hour

Step-by-step explanation:

36/60 reduce ---> 6/10 ---> 3/5

Find the square root of 156.25 by division method

Answers

Hello,

I don't know the divison method but is it these one?

156.25= 625/4=(25/2)²

√156.25= 12.5

Karen is seven years older than suzanne.Four years ago,karen was twice as old as suzanne was.How are they now?

Answers

$K-Karen\ age\nS-Suzanne\ age\nK-4-Karen\ age\ 4\ years\ ago\nS-4-Suzanne\ age\ 4\ years\ ago\n\n \left\{\begin{array}{ccc}K=S+7\nK-4=2(S-4)\end{array}\right\n\left\{\begin{array}{ccc}K=S+7&(1)\nK-4=2S-8&(2)\end{array}\right\n\nsubtitute\ (1)\ to\ (2):\n\n(S+7)-4=2S-8\nS+7-4=2S-8\nS+3=2S-8\ \ \ \ |subtract\ 3\ from\ both\ sides\nS=2S-11\ \ \ |subtract\ 2S\ from\ both\ sides\n-S=-11\n\boxed{S=11}$

$Put\ the\ value\ of\ S\ to\ (1):\n\nK=11+7\n\boxed{K=18}\n\n\left\{\begin{array}{ccc}K=18\nS=11\end{array}\right\n\nAnswer:\ Karen\ does\ 18\ years\ and\ Susanne\ does\ 11\ years.$

karen age=k
suzanne age=s

karen (k) is (=) 7 years older (+7) than suzanne(s)
k=7+s

four year ago means
s-4 and k-4

four years ago (-4 to all) karen (k) was (=) twice (2 times) suzzane (s)
k-4=2(s-4)
distribute
k-4=2s-8
add 4 to both sides
k=2s-4
we know that k=7+s so subsitute 7+s for k
7+s=2s-4
add 4 to both sides
11+s=2s
subtract s from both sides
11=s

suzanne=11
subsitute 11 for s in k=s+7

k=7+11
k=18

karen=18
suzanne=11

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