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melisa1 [442]
1 year ago
11

Use PEMDAS to find the surface area.81 + 72(4)612 km2369 km2157 km2

Mathematics
1 answer:
DanielleElmas [232]1 year ago
3 0

Given:

\begin{gathered} 81+72(4) \\ \text{Using PEMDAS} \\ \text{ P = Parenthesis comes first} \end{gathered}

Hence,

81+\text{ 288}undefined

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3 years ago
-15.6 = -3.9r<br> please include an explanation of how you got your answer :) thanks
Mumz [18]

Here is the equation:

-15.6 = -3.9r

Since both decimals are negative, the answer will be positive.

  • Negative times Negative = Positive

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5 0
3 years ago
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Genrish500 [490]

Answer:

B.x^{2} +2x-8

Step-by-step explanation:

Here the best method to solve is by substituting the end values of the set in each option , otherwise it will a time consuming problem.

Now substitute x=-4 in all the options

A.x^{2} -2x-8

16+8-8=16>0

so out of option A and C option C is correct.

B.x^{2} +2x-8

16-8-8=0 which means for the values of x>-4 x^{2} +2x-8is less than 0

Now substitute x=2 in all the options

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B.x^{2} +2x-8

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3 years ago
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