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4 years ago

9

(Y+9)x2=42 find the cross products

1 answer:

sveta [45]4 years ago

8 0

2y+18=42
2y=24
y=12
Hope this helps!

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Lf P=3y2 + 2xy-2x, Q = 2x2 + 4xy-y2 and R=5x2-3xy then<br>show that P+(Q+R) = (P+Q) + R.

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kakaStep-by-step explanation:

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3 years ago

See attachment for question (I will report you if you are only doing it for the points)

vovikov84 [41]

Answer:

x => y

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3 => 5

15 => -3

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Step-by-step explanation:

Given the domain function, {-12, -6, 3, 15}, and the equation of the function, $y = -\frac{2}{3}x + 7$ , we can complete the given table by simply plugging in the value of either x to find y, or y to find x in the table given. The domain values are all x-values you have in the table.

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$y = -\frac{2}{3}(-6) + 7$

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$-2 = \frac{-2x}{3}$

$-2*3 = \frac{-2x}{3}*3$

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Find x when y = 15:

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$8 = -\frac{2}{3}x$

$8 = \frac{-2x}{3}$

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$24 = -2x$

$\frac{24}{-2} = \frac{-2x}{-2}$

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$x = -12$

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