3 years ago

Solve 8/15 and m/45 of a proportion

Mathematics

2 answers:

kramer3 years ago

7 0

8/15 = m/15 Cross multiply: 8 * 45 = 15 * M Simplifying 8 * 45 = 15 * M Multiply 8 * 45 360 = 15 * M Solving 360 = 15M

s344n2d4d5 [400]3 years ago

6 0

8 m 
15 45

360=15m
15

24=m

 8 24
15 45

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3 years ago

F(x)=sqrt x+2; g(x)=sqrt 8x-6. FInd f(g(x))

zhenek [66]

Hello!

This question is an example of composition of functions. It is using range values of some given function as domain values of some other given function to find new range values. Remember that the domain of the composite function will be the same as the domain of the first function.

Given f(g(x)), for f = $\sqrt{x+2}$ , substitute x with g(x) = $\sqrt{8x-6}$ .