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larisa86 [58]
3 years ago
7

Given f(x)=½(8-2x), what is the value of f(-5)? help plez

Mathematics
2 answers:
guajiro [1.7K]3 years ago
8 0

Answer:

9

Step-by-step explanation:

f(x)=½(8-2x)

Let x = -5

f(-5)=½(8-2* (-5))

     =½(8+10)

     =½(18)

     =9

Gnoma [55]3 years ago
8 0

\\ \tt\bull\rightarrowtail f(x)=1/2(8-2x)

\\ \tt\bull\rightarrowtail f(-5)

\\ \tt\bull\rightarrowtail 1/2(8-2(-5))

\\ \tt\bull\rightarrowtail 1/2(8+10)

\\ \tt\bull\rightarrowtail 1/2(18)

\\ \tt\bull\rightarrowtail 9

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raketka [301]
<h3>Answer is   -9</h3>

=================================

Work Shown:

(g°h)(x) is the same as g(h(x))

So, (g°h)(0) = g(h(0))

Effectively h(x) is the input to g(x). Let's first find h(0)

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So g(h(x)) becomes g(h(0)) after we replace x with 0, then it updates to g(3) when we replace h(0) with 3.

Now let's find g(3)

g(x) = -3x

g(3) = -3*3

g(3) = -9

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alternatively, you can plug h(x) algebraically into the g(x) function

g(x) = -3x

g( h(x) ) = -3*( h(x) ) ... replace all x terms with h(x)

g( h(x) ) = -3*(x^2 + 3) ... replace h(x) on right side with x^2+3

g( h(x) ) = -3x^2 - 9

Next we can plug in x = 0

g( h(0) )  = -3(0)^2 - 9

g( h(0) ) = -9

we get the same result.

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3 years ago
2.36 to the nearest whole number
Igoryamba

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Step-by-step explanation:

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Schach [20]

Step-by-step explanation:

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leva [86]
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So firstly, let's start with the x-coordinates. Since we know the midpoint's x-coordinate and point A's x-coordinate, we can solve for point B's x-coordinate as such:

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