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masha68 [24]
3 years ago
8

2h + 4h with h = -6 Please answer :)

Mathematics
1 answer:
insens350 [35]3 years ago
5 0

Answer:

-36

Step-by-step explanation:

They gave you the numerical value of h. Think of h as just a placeholder. So each time you see h, you replace it with its numerical value. This is true for all letters such as the famous x and y.

<u>Replace h with -6</u>

2(-6) + 4(-6) = -36

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Step-by-step explanation:

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Step-by-step explanation:

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Step-by-step explanation

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Read 2 more answers
Solve the system of equations using substitution<br> 4x + 2y = 16<br> =−12+5
mario62 [17]

Answer:

x=\frac{70}{11},\:y=\frac{20}{11}

Step-by-step explanation:

\begin{bmatrix}4x+2y=16y\\ y=-\frac{1}{2}x+5\end{bmatrix}

\mathrm{Substitute\:}y=-\frac{1}{2}x+5

\begin{bmatrix}4x+2\left(-\frac{1}{2}x+5\right)=16\left(-\frac{1}{2}x+5\right)\end{bmatrix}

Simplify

\begin{bmatrix}3x+10=16\left(-\frac{1}{2}x+5\right)\end{bmatrix}

Isolate x for 3x+10=16(-1/2x+5): x=\frac{70}{11}

\mathrm{For\:}y=-\frac{1}{2}x+5

\mathrm{Substitute\:}x=\frac{70}{11}

y=-\frac{1}{2}\cdot \frac{70}{11}+5

-\frac{1}{2}*\frac{70}{11}+5=\frac{20}{11}

y=\frac{20}{11}

\mathrm{The\:solutions\:to\:the\:system\:of\:equations\:are:}

x=\frac{70}{11},\:y=\frac{20}{11}

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3 years ago
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