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2 years ago

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Mathematics

1 answer:

seraphim [82]2 years ago

5 0

Answer:

Step-by-step explanation:

The formula to find the x coordinate is

$x=\frac{bx_1+ax_2}{a+b}$ where x1 and x2 come from the coordinates of J and K, and a = 2 (from the ratio) and b = 5 (from the ratio). Filling in:

$x=\frac{5(-6)+2(8)}{2+5}=\frac{-30+16}{7}=\frac{-14}{7}=-2$

Your choice is B

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Consider a function f(x) such that f(5x) =x-5/5x-1. Find f(x) and hence write down the domain of f(x).

nasty-shy [4]

Answer:

$f(x) = \frac{x - 25}{5x - 5}$

Domain: $x \ne 1$

Step-by-step explanation:

Given

$f(5x) = \frac{x - 5}{5x - 1}$

Required

Determine f(x) and its domain

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So, we have:

$f(5x) = \frac{\frac{5x}{5} - 5}{5x - 1}$

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