tiwaribianca475
30.10.2020 •
Mathematics
The value of y varies directly with x. If x=104, then y=78. What is the value of x when y=39?
58
58
52
52
29.25
29.25
69.3
Solved
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Ответ:
52
Step-by-step explanation:
Since the value of y varies directly with x, y = kx where k is a constant.
Since x=104, then y=78, we need to calculate the constant k. This will be:
y = kx
78 = 104k
k = 78/104
k = 0.75
What is the value of x when y=39?
Since y = =kx
39 = 0.75x
x = 39/0.75
x = 52
Ответ:
0.4285
Step-by-step explanation:
:)