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3 years ago

V=1/2pir^2hsolve for h

Mathematics

1 answer:

TiliK225 [7]3 years ago

4 0

Times 2 both sides
2V=pir^2h
divide both sides by pir^2
$\frac{2V}{pir^2}=h$

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Compared to last year, the population of boom town has increased by 25%. The population is now 6,600. What was the population la

prisoha [69]

Answer:

5280people

Step-by-step explanation:

Given parameters:

Percentage increase of population = 25%

Population now = 6600

Unknown:

Population last year = ?

Solution:

Let the population last year = y;

Then;

Percentage of last years population plus the population of last year should give us this year's population;

( $\frac{25}{100}$ of y) + y = 6600

0.25y + y = 6600

1.25y = 6600

y = $\frac{6600}{1.25}$ = 5280people

Last year, there was 5280people in the locality.

5 0

2 years ago

Please solve each equation & check your solution. Thank You!

Deffense [45]

Answer:

G). 1.2x + 7.92 -3.3x = 41

-2.1x=33.08

x = 33.08/-2.1

x = - 15.752

H). 3x/2 + 9/5 = 12

Multiply through by 10

15x + 18 =120

15x =120-18

15x = 102

x =102/15

x=34/5

I). 5 = 9/4 - r/3

Multiply through by 12

60= 27 - 4r

60 - 27 = -4r

33 = - 4r

r = -33/4

J). 2(x - 2) = 12

2x - 4 = 12

2x = 16

x = 16/2

x = 8

8 0

3 years ago

If a rabbit can move 2 1/4 miles every hour, then how many hours would it take for the rabbit to go 9 miles

d1i1m1o1n [39]

It would take 4 hours to go 9 miles.

5 0

2 years ago

Tom had $55.85. He bought a shirt for $14.86, pants for $25.88, and socks for $5.76. Explain (using a sentence) how Tom can esti

charle [14.2K]

Answer:

$9.35

Step-by-step explanation:

14.86+25.88+5.76=46.5

55.85-46.5=9.35

5 0

3 years ago

Read 2 more answers

Select the correct answer.

adelina 88 [10]

Answer:

$\frac{5}{4} x - 2 = \frac{3}{2} x-4$

Step-by-step explanation:

$\frac{5}{2} x +\frac{7}{2} =\frac{3}{4} x+14 \\\frac{5}{2}x -\frac{3}{4} x=14-\frac{7}{2} \\\frac{10-3}{4} x =\frac{28-7}{2} \\\frac{7}{4} x =\frac{21}{2} \\x = \frac{21}{2} * \frac{4}{7} = 6 \\$

$\frac{5}{4} x -9 = \frac{3}{2} x-12 \\\frac{5}{4} x - \frac{3}{2} x= -12 + 9 \\\frac{5-6}{4} x = -3 \\\frac{-1}{4} x = -3 \\x = -3 * -4 \\x = 12$

$\frac{5}{4} x-2=\frac{3}{2} x-4 \\\frac{5}{4} x-\frac{3}{2} x=-4+2 \\\frac{5-6}{4}x=-2 \\\frac{-1}{4} x = -2 \\x = -2 * -4 \\x = 8$

$\frac{5}{2} x -7 = \frac{3}{4} x+14 \\\frac{5}{2}x -\frac{3}{4} x=14+7 \\\frac{10-3}{4} x =21 \\\frac{7}{4} x =21 \\x = 21 * \frac{4}{7} = 12 \\$

You could also replace x for 8 in every equation and see if both sides give the same answer

8 0

3 years ago