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harkovskaia [24]
2 years ago
7

The value of y is directly proportional to the value of x. If y = 45 when x = 140, what is the value of y when x = 70?​

Mathematics
1 answer:
Dennis_Churaev [7]2 years ago
7 0

Step-by-step explanation:

Y is directly proportional to X" can be rewritten as a mathematical expression of the form Y = KX

"K" is the constant of proportionality and must be determined from the initial information.

If Y = 45 when X=140 means 45 = 140K

K = 45/140 = 0.32

Now that we know the value of K, we can use it to calculate the value of Y when X=70

Y = (0.32)(70) = 22.4

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