laurenhaldeman laurenhaldeman

22-12-2017
Mathematics

contestada

MATH HELP PLEEEEEASE
The function f(x) varies inversely with x and f(x)=2 when x=16.
What is f(x) when x=4?

♦ 128
♦ 72
♦ 40
♦ 8

Respuesta :

tynollette tynollette

22-12-2017

varying inversely means f(x)=a constant divided by x, f(x)=k/x
find k: f(16)=k/16=2, k=32
so the function is f(x)=32/x
when x=4: f(4)=32/4=8
the answer is D.

Answer Link

Otras preguntas

Occasionally, a layer of cool air forms under a layer of warmer air in the troposphere, which is different from the normal conditions. This change from the norm

Which number completes the inequality ?

You are hiking and are trying to determine how far away the nearest cabin is, which happens to be due north from your current position. Your friend walks 200 ya

What is the prime factorization of 621?

From the information given, determine which triangles, if any, are congruent and state by which rule. If the triangles cannot be shown to be congruent, write, "

Use the alternative curvature formula K=|a x v|/|v|^3 to find the curvature of the following parameterized curves. to find the curvature of the following parame

A light ray is incident on a reflecting surface. If the light ray makes a "35°" angle with respect to the normal to the surface, what is the exact angle (in deg

Was there just an earthquake in san francisco?

which information must be known about a compound to find the molecular formula from the empirical formula

The price of a pair of shoes is $52. This price is 15% lower than last week. What was the price of the shoes last week? Round your answer to the nearest cent