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Lerok [7]
3 years ago
14

Let g(x) be the reflection of f(x) in the x-axis. What is the function rule for g(x)? Let g(x) be the reflection of f(x) = 3x +

12 in the x-axis. What is a function rule for g(x)?
A. g(x) = 3x + 12 <---**
B. g(x) = -3x + 12
C. g(x) = -3x - 12
D. g(x) = 3x - 12
Mathematics
2 answers:
Vika [28.1K]3 years ago
8 0
Reflection across the y axis means multiply the whole function by -1

so

f(x)=3x+12
times -1
g(x)=-3x-12 is the answer


answer is C
not sure why you put an arrow to choice A, but it's wrong


C is the right answer
valina [46]3 years ago
7 0
I think it'd be C.......
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irina [24]

Turn the improper fraction 2(3/4) into a mixed fraction by multiplying the coefficient or outside number "2" by the denominator "4" and then adding that result with the numerator "3":

2*4 = 8

8 + 3 = 11

Leave the denominator fixed and put you previous result as the numerator; your new fraction is 11/4

Now multiply this with 4/5:

11/4 * 4/5 = 44/20 = 22/10 = 11/5 (simplified result)

Now convert this simplified mixed fraction back into an improper fraction:

You divide the denominator "5" into the numerator "11" and put the most amount of times it goes into it out front as the coefficient;

We get that 5 goes into 11 a maximum number of times which is 2.

Then subtract the numerator "11" from "10" (5 *2) and we get 1.

Our answer is 2(1/5)

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3 years ago
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2 years ago
The sum of three times a and four is the same as five yimes a?
Umnica [9.8K]

\text{the sum of three times a and four}:3a+4\\\\\text{five times a}:5a\\\\The\ equation:\\\\3a+4=5a\qquad\text{subtract 3a from both sides}\\\\4=2a\qquad\text{divide both sides by 2}\\\\2=a\to\boxed{a=2}

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Find the measure of LaTeX: aa and LaTeX: b\:bin the diagram below.
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Answer:

what is LaTeX

Step-by-step explanation:

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Can you guys help me​
Fudgin [204]

Answer:

The answer is 76.

Step-by-step explanation:

≅ means to be equal to.

☆Angle DGE ≅ EGF.

Therefore, 3x + 8 = 5x - 12

☆Let's solve that equation.

3x  + 8 = 5x - 12 \\  \frac{ - 5x \:  \:  \:  \:  \:  \:  \:   =  - 5x  \:  \:   \:  \:   \: \:  \:  \: }{ - 2x + 8 =  - 12}  \\  \frac{  \:  \:  \:  \:  \:  \:  \:  \: - 8  =  - 8}{  \frac{ - 2x}{ - 2}  =  \frac{ - 20}{ - 2} }   \\ x = 10

We found the value of x which is 10.

☆Let's Now plug in.

DGE \\ 3x + 8 \\ 3(10) + 8 \\ 30 + 8 \\ 38

and the other:

EGF \\ 5x - 12 \\ 5(10) - 12 \\ 50 - 12 \\ 38

☆They asked for what the angle of DGF measured. So we would have to add both sides

38 + 38 = 76

☆The answer is 76

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