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xxMikexx [17]
3 years ago
14

Help plz...............

Mathematics
1 answer:
BartSMP [9]3 years ago
8 0
Y = -4(x - 2)² + 4
This equation is in vertex form. 

y = a(x - h)² + k
(h,k) is the vertex.

(h, k) = (2, 4)
axis of symmetry x = 2

So it will be the graph with a point at (2, 4).
Also remember that it opens downward because the a is negative.

The graph is the upper right one.
vertex is (2, 4).
x = 2

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If f(x) = 5x, what is f–1(x)?
Ahat [919]
To get the inverse of a function interchange
the x's with the y'x and solve for y, as follows:
y=5x-7


Interchange to get:
x=5y-7
Solve for y to get:
y=(1/5)x+(7/5)

so I think it might be c


4 0
3 years ago
Read 2 more answers
I will mark Brainliest!! 87 Points!!
DIA [1.3K]
<h3>f(x) = -3·2^(x-1) -1</h3>
  • reflection across the x-axis (multiplication by -1)
  • vertical expansion by a factor of 3 (multiplication by 3)
  • shift to the right 1 unit (replace x with x-1)
  • shift down 1 unit (add -1 to the function value)

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<h3>f(x) = -1/4·2^(x+1) -1</h3>

You may notice this is the same as the previous question, but with the vertical expansion factor 1/4 instead of 3, and the horizontal shift left instead of right.

  • reflection across the x-axis (multiplication by -1)
  • vertical compression by a factor of 4 (multiplication by 1/4)
  • shift to the left 1 unit (replace x with x+1)
  • shift down 1 unit (add -1 to the function value)

6 0
3 years ago
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Which picture shows the correct graph of |x|=5?
Marrrta [24]

|x| = 5

x = 5 or x = -5

You need a graph that has a closed dot on -5 and a closed dot on 5.

Answer: B. Picture B

4 0
3 years ago
Pls hurry!!! I need to finish! Look at the photo, its problem 38 that I’m on.
lara [203]
I'm not sure sry maybe you should of studied
3 0
3 years ago
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jessica weighs x+34 pounds and Ronda weighs 12 pounds less. If Jessica gains 5 pounds and Ronda loses 2 pounds, what is the sum
Vladimir [108]

Answer:

2x+59.

Step-by-step explanation:

Let <em>J </em>represent Jessica's weight and <em>R</em> represent Ronda's weight.

Jessica weighs <em>x+34</em> pounds. Thus:

J=x+34

Ronda weighs 12 pounds less than Jessica. In other words:

R=J-12=(x+34)-12\\R=x+22

The sum of their weights, therefore, is:

J+R\\=(x+34)+(x+22)=2x+56

Now, if Jessica gains 5 pounds and Ronda loses 2 pounds, the net gain of the total weight would be 3 pounds. Thus, we only need to add 3 to the original total to find the sum of their new weights:

2x+56+3=2x+59

The sum of the new [weights] is represented by 2x+59.

8 0
3 years ago
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