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natali 33 [55]
3 years ago
11

If y = 7.2 when x = 10, what is the value of x when y = 20? (y varies inversely as the square of x.)

Mathematics
1 answer:
Sphinxa [80]3 years ago
4 0
The answer is 14.4.................................
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Laura is trying to find the volume of a cone. So far she has found the area of the base of the cone and multipiled it by the hei
MrRa [10]

Answer: Divide resulting answer by 3

Step-by-step explanation:

After you find the area of the base of the cone and multiplied it by the height of the cone, use the answer for that equation and divide it by 3 to get your final answer.

8 0
3 years ago
Orion is constructing a rectangular box. The base of the box is a piece of wood with an area of 90 square inches. The volume of
gladu [14]

The volume of a rectangular prism is the product of the three dimensions.

The width and length give the base area,  which is 90.

So, if we multiply the base area and the height, we get the volume:

w\cdot l\cdot h = V \implies h = \dfrac{V}{w\cdot l}

We know that V=1080 and w*l (i.e. the base area) is 90. So, we have

h=\drac{1080}{90}=12

5 0
3 years ago
The combined height of one fir tree and one pine tree is 212121 meters. The height of 444 fir trees stacked on top of each other
Drupady [299]

Answer:

Height of fir tree = 9 meters

height of pine tree= 12 meters

Step-by-step explanation:

The combined height of one fir tree and one pine tree is 21 meters. The height of 4 fir trees stacked on top of each other is 24 meters taller than one pine tree.

Let x be the height of fir tree and y be the height of pine tree

x+y=21

Subtract x from both sides

y=21-x

height of 4 fir trees = pine tree +24

4x=y+24

Substitute 21-x or y in the above equation

4x=21-x+24

Add x on both sides

5x=45

Divide by 5 on both sides

x=9

Now plug in 9 for x and find out y

y=21-x

y=21-9

y=12

Height of fir tree = 9 meters

height of pine tree= 12 meters

4 0
3 years ago
Select the correct answer. Solve -9 2/7 -(-10 3/7) . A. -1 1/7 B. 1 1/7 C. 19 1/7 D. 19 5/7
Stells [14]

Answer:

B. 1 1/7

Step-by-step explanation:

-9 2/7-(-10 3/7)

=-9 2/7+10 3/7

=1 1/7

Therefore, B. 1 1/7

7 0
3 years ago
Which of these is a correct statement?
Nonamiya [84]
I think the answer in this case would be D 
3 0
3 years ago
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