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dolphi86 [110]
2 years ago
11

(-10) + 3 = 10 - 3 is true or false??? ​

Mathematics
1 answer:
Goshia [24]2 years ago
3 0

(-10) + 3 = -(10 - 3) = -7

10 - 3 = 7

-7 ≠ 7

<em><u>FALSE</u></em>

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Please include work!
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Answer:

x = ± 4

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Step-by-step explanation:

y = 0.5x² - 10 ------------------------(I)

y = -x² + 14   ------------------------(II)

Substitute the y value in equation (II)

    0.5x² - 10  = -x² + 14           {Add x² to both sides}            

0.5x² + x² -10 = 14                  {combine like terms}

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Substitute x = 4 in (I)

y = 0.5 * 4² - 10

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y = -2

Substitute x = -4 in (I)

y = 0.5 * (-4)² - 10

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Step-by-step explanation:

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