Mathematics: Solve for x and y need help fast.

Solve for x and y need help fast. - id11455472, Thunderalesis7855

Ответ:

tddreviews

25.02.2021

Mathematics

(x, y) = (4, -8)

Step-by-step explanation:

2x - 2y = 24 $\Rightarrow$ 4x - 4y = 48

4x + 7y = -40

Subtracting the two equations from each other, we get:

(4x + 7y) - (4x - 4y) = -40 - 48

11y = -88

y = -8.

Then, 2x - 2*(-8) = 24. So, 2x + 16 = 24 $\Rightarrow$ 2x = 8 $\Rightarrow$ x = 4

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Ответ:

fazegaze89

18.03.2020

Mathematics

$\bf f(t)=10t^2+5t+1\implies \stackrel{\textit{slope of tangent}}{\cfrac{df}{dt}}=20t+5\implies 1=20t+5
\\\\\\
-4=20t\implies -\cfrac{4}{20}=t\implies -\cfrac{1}{5}=t$

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Solve for x and y

need help fast.

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