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Marrrta [24]
3 years ago
11

Find the value of n in the solution to the system of equations shown.

Mathematics
2 answers:
nevsk [136]3 years ago
7 0

Subtract the second equation from the first.

... 0 = 2n -10

Divide by the coefficient of n.

... 0 = n - 5

Add 5.

... 5 = n . . . . the lower-left selection is appropriate

Blizzard [7]3 years ago
4 0

\bf \begin{cases} \boxed{m}=5n-3\\ m=3n+7 \end{cases}\implies \boxed{5n-3}=3n+7\implies 2n=10 \\\\\\ n=\cfrac{10}{2}\implies n=5

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Step-by-step explanation:

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Step-by-step explanation:

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vampirchik [111]

Answer:

In this problem, we are given the following functions:

f(x)=\frac{1}{2}x

and its inverse function:

f^{-1}(x)=2x

First of all, we want to calculate f(2). This can be obtained by substituting

x = 2

into f(x). Doing so, we find:

f(2)=\frac{1}{2}\cdot 2 = 1

Then we want to calculate f^{-1}(1). We can do it by substituting

x = 1

into f^{-1}(x). Doing so,

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Then we want to calculate f^{-1}(f(2)), which can be found by calculating f(2) and then using it as input for f^{-1}(x). We know that

f(2) = 1

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Finally, we want to find f(f^{-1}(-2))

We know already that

f^{-1}(-2)=-4

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f(f^{-1}(-2))=f(-4)=-2

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