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Colt1911 [192]
2 years ago
6

Find the value of y = -4x + 9, when x = -7.

Mathematics
1 answer:
krek1111 [17]2 years ago
7 0

Answer:

-19

Step-by-step explanation:

y = -4(-7)+9

= -28 + 9

= - 19

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Answer:

V = 100π

Step-by-step explanation:

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3 years ago
The graph of y=f(x) is the solid black graph below. Which function represents the dotted graph?
Fed [463]

Answer:   y = f(x - 4) - 1, lower left corner

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

Explanation:

Let's focus on only the left-most points of each curve

For the black semicircle, the left-most point is located at (-7,0). The corresponding point on the red semicircle is at (-3,-1)

To go from (-7,0) to (-3,-1), we will do two things

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This can be done in any order. The action of "shift 4 units to the right" is effectively the same as shifting the xy axis 4 units to the left while keeping the curves fixed in place. This gives the illusion of movement. When we shift 4 the xy axis 4 units to the left, we're replacing each x input with x-4 as the new input.

In short, we go from f(x) to f(x-4). This is why we have this opposite motion going on.

The up and down motion is fairly straight forward. To shift 1 unit down, we subtract off 1. This is to subtract 1 from the y coordinate.

Overall, we go from y = f(x) to y = f(x - 4) - 1

Applying this transformation will move (-7,0) to (-3,-1) as described above. It will also move every other point on the black curve to their new corresponding location on the red curve.

3 0
3 years ago
I’m going into high school soon, please drop any advice or tips you would recommend me knowing and thank you in advance:) btw if
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Hi, I'm currently a sophomore (10th grader) and my biggest advice would be don't give into peer presssure when it comes to choosing classes. Only take classes that you feel you are able to handle and succeed in, don't take high level classes just because your friends are!

Step-by-step explanation:

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3 years ago
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Answer:

8/9

Step-by-step explanation:

could i have brailiest plz it  isnt a must tho thx

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2 years ago
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