lilpeepxliltracy
20.10.2020 •
Mathematics
The value of y varies directly with x. When y=30, x=0.75. What is the value of y when x=5.25?
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Ответ:
210
Step-by-step explanation:
According to this question, y varies directly with x. Mathematically, This means that:
y =kx
Where k is the constant variable
If y=30 and x=0.75, then k will be;
k = y/x
k = 30/0.75
k = 40
Since k = 40,
y = 40x
Therefore, when x=5.25, the value of y will be:
y = 40x
y = 40 × 5.25
y = 210.
Ответ:
V=pi(D/2)^2(h/3) substitutiing, the answer is 102.07in^3
After scaling up the answer is 344.49in^3. This answer was derived by multiplying each dimension with the scaling factor of 1.5 then using the equation above to solve the volume.