Aparabolic listening device is shaped such that the depth of the bowl depends on its radius and can be represented by the curve d(r) = 0.145r2.
what is the radius when the depth is 8 inches? round to the nearest thousandth of an inch.
4.417 inches
5.252 inches
7.428 inches
20.505 inches

radius is 7.428 inches.

Step-by-step explanation:

Given:

Depth = 8 inches

D(r)= 0.145

Substituting the values we get

8 =0 .145

Radius is 7.428 inches

let m = monomial

let t = trinomial

so, m times t = t.

monomial times a trinomial = another trinomial.

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step-by-step explanation: