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Sati [7]
3 years ago
12

A box is a rectangular prism with a square base. The volume is 972 cubic centimeters and the area of the square base is 81 squar

e centimeters. What is the height of the box? Explain how you found your answer.
Mathematics
1 answer:
Dafna1 [17]3 years ago
8 0
The volume is V=LxWxH.  The length x Width is just the area, A, of the bottom (also of the top)  So you could also write V=AxH, that is volume is
area x height.  Since we know V equals 972 and A equals 81 we can solve for H:
V=AxH
972=81H
972/81=H
H=12cm
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a car uses 30 gallons of gasoline for a trip of 750 miles. How many gallons would be used on a trip of 450 miles
MariettaO [177]

Answer:

The answer is 18

Step-by-step explanation:

<h3><u>Given</u>;</h3>

A car uses 30 gallons of gasoline for a trip of 750 miles.

<h3><u>To </u><u>Find</u>;</h3>

Gallons would be used on a trip of 450 miles.

Now, Gasoline used for one mile

30 ÷ 750 = 0.04

So,

0.04 × 450 = 18

Thus, 18 gallons would be used on a trip of 450 miles.

 

<u>-</u><u>TheUnknownScientist</u><u> 72</u>

3 0
2 years ago
How many lines of symmetry does a heart have anything
GuDViN [60]
One line of symmetry,

8 0
4 years ago
Which value of x is a solution to this equation? 16 + 2x = 36
Scorpion4ik [409]

Answer:

x=10

Step-by-step explanation:

16+2x=36

subtract 16 from both sides

2x=20

divide 2 from both sides

x=10

7 0
3 years ago
Read 2 more answers
What is a equivalent expression for 8-2y+5x-13+6y-2x+9
poizon [28]

Answer:

4y+3x+17

Step-by-step explanation:

take the similar numbers and add them together.

1. -2y+6y = 4y

2. 5x-2x = 3x

3. 8+9 = 17

Put the numbers back together into the new and simplified equation: 4y + 3x + 17

5 0
4 years ago
The molar mass of AlCl3 is 133.34 g/mol. How many molecules of AlCl3 are there in 2 g?
Mnenie [13.5K]

To solve this problem, we have to apply mole-concept to this and we would need the molar mass of AlCl3.  2g of AlCl3 contains 9.034*10^21 molecules.

<h3>Number of Molecules in 2g of AlCl3</h3>

The molar mass of AlCl3 is given as 133.34g/mol

Data;

  • mass = 2g
  • molar mass = 133.34g/mol

Using the mole concept, we can equate the molar mass to the number of molecules present in the entity.

133.34g = 6.023*10^2^3

If we equate this

133.34g = 6.023*10^2^3\\2g = x molecules\\x = \frac{2*6.023*10^2^3}{133.34} \\x = 9.034*10^2^1 molecules

From the calculations above, 2g of AlCl3 contains 9.034*10^21 molecules.

Learn more on mole concept here;

brainly.com/question/21150359

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5 0
2 years ago
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