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romanna [79]
3 years ago
6

Determine whether quantities vary directly or inversely and find the constant of variation. It takes three identical water pumps

8 hours to fill a pool. How long would it take four of these same pumps to fill the pool, assuming they all pump at the same rate?
PLEASE HELP!!
Mathematics
1 answer:
s2008m [1.1K]3 years ago
3 0
8 * 3 = 24
24/4 = 6 HOURS
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The graph where the red point has a meaning is the graph C or third graph.

Step-by-step explanation:

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Similarly, in graph B, height and team numbers are not related to each other in any way, so not clear meaning can be withdrawn here,

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So, the graph where the red point has a meaning is the graph C or third graph.

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If y varies inversely as the square of x and y=4 when x=5, find y when x is 2
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need to kind K

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An office supply company sells two types of fax
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14 of the machine that cost $150 was sold and 8 of the machine that cost $225 was sold.

To solve this problem, we would write a system of linear equations.

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We can proceed to write our equations now.

x + y = 22...equation(i)\\150x + 225y = 3900...equation(ii)

From equation 1

x+ y = 22\\x = 22 - y...equation (iii)

<h3>The Value of Y</h3>

put equation (iii) into (ii)

150x + 225y =3900\\x = 22-y\\150(22-y)+225y=3900\\3300-150y+225y=3900\\3300+75y=3900\\75y=3900-3300\\75y=600\\75y/75=600/75\\y=8

<h3>The Value of X</h3>

Since we know the number of y, we can simply substitute it into equation (i) and solve.

x + y = 22\\x + 8 = 22\\x = 22-8\\x = 14

From the calculations above, 14 of the machine that cost $150 was sold and 8 of the machine that cost $255 was sold.

Learn more about system of equations here;

brainly.com/question/13729904

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Answer:

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