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kati45 [8]
3 years ago
15

Answer this for me please

Mathematics
1 answer:
yan [13]3 years ago
6 0

Answer:

X = 9/2 or X = 3

Step-by-step explanation:

5x + 2 = 7x -7

5x - 7x = - 2 - 7

<u>2</u><u>x</u> =<u> </u><u>-</u><u>9</u>

2 2

X = - 9/2

or X = 3 (lowest term)

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What is the measure of an angle that turns through 3/4 of a complete circle
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3 years ago
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2 years ago
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professor190 [17]

Answer:

25% decreased by 60% is 10

Step-by-step explanation:

New value =

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7 0
3 years ago
What adds ups to 5 but multiplies to give you 12
qaws [65]
X + y = 5
    xy = 12

x + y = 5
      y = -x + 5

                xy = 12
      x(-x + 5) = 12
  x(-x) + x(5) = 12
       -x² + 5x = 12
             - 12   - 12
-x² + 5x - 12 = 0
 x² - 5x + 12 = 0
x = 5 ± √25 - 48
                2
x = -5 ± √-23
           2
x = -5 ± 4.79i
            2
x = -5 + 4.79i    or    x = -5 - 4.79i
            2                              2
x = -2.5 + 2.395i   or    x = -2.5 - 2.395i
y = -2.5 - 2.395i   or    y = -2.5 + 2.395i

The two numbers that add up to 5 and multiply to 12 is -2.5 ± 2.395i, which is -2.5 + 2.395i and -2.5 - 2.395i.
6 0
3 years ago
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