To find the value of p when q=15 and r=25, we need to find the constant of proportionality relating p, q, and r using the given information.
We are told that p varies partly as q and partly as the square of r. This can be represented as:
p = k * q * r^2
where k is the constant of proportionality.
We can solve for k by plugging in the values of p, q, and r from the first set of given information (p=6, q=8, r=4):
6 = k * 8 * 4^2
6 = k * 8 * 16
6 = k * 128
Dividing both sides by 128:
k = 6/128
k ≈ 0.046875
Now that we have the value of k, we can use it to find the value of p when q=15 and r=25:
p = 0.046875 * 15 * 25^2
p = 0.046875 * 15 * 625
p = 34.375
Therefore, when q=15 and r=25, p is approximately equal to 34.375.
p varies partly as q and partly as the square of r. when p=6, q=8, r=4 and when p=10, q=12, r=5
A)Find the value of p when q=15, r=25
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