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GalinKa [24]
3 years ago
9

PLEASE HELP

Mathematics
1 answer:
alexgriva [62]3 years ago
5 0
Its definately A...hope this helps

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Please help me with this<br> :(((<br> will give 5 stars
shtirl [24]
The answer would be
3x² + 6
4 0
3 years ago
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(Please help quick! will do brainliest!!)
Kaylis [27]

Answer:

110

Step-by-step explanation:

that's what I got, I apologize if it's incorrect

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3 years ago
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Use the translation (x, y)→(x−4, y+2) to find the preimage of (7, 2)
Bess [88]

Answer:

(11 , 0)

Step-by-step explanation:

x - 4 = 7

x = 7 +4

x = 11

           y + 2 = 2

                y = 2 - 2

                 y = 0

6 0
2 years ago
A 180 ft long board is cut into 3 pieces. The second piece of
blagie [28]

Answer:

20 feet

Step-by-step explanation:

1st piece = x

2nd piece = 2x

3rd piece = 6x

x+2x+6x=180

9x=180

x=20

so the first piece is 20 feet, the second is 40, and the third is 120.

6 0
3 years ago
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How can i solve by completing the square 4r^2-28r=-49
Natalija [7]
To complete the square, the second degree term must have a coefficient of 1.
Since the second degree term here has a coefficient of 4, we start by dividing each term on both sides by 4.

4r^2 - 28r = -49

\dfrac{4r^2}{4} - \dfrac{28}{4}r = -\dfrac{49}{4}

r^2 - 7r = -\dfrac{49}{4}

Now we can complete the square.
First, we need to find what number completes the square.
We take the coefficient of the first degree term, -7 in this case.
Divide it by 2 and square it. -7 divided by 2 is the fraction -7/2.
Now we square -7/2 to get 49/4.
We add 49/4 to both sides.

r^2 - 7r + \dfrac{49}{4} = -\dfrac{49}{4} + \dfrac{49}{4}

(r - \dfrac{7}{2})^2 = 0

r - \dfrac{7}{2} = 0

r = \dfrac{7}{2}
3 0
4 years ago
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