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Lelechka [254]
3 years ago
15

The solution to 2x2 – 11 = 87 is

Mathematics
2 answers:
frozen [14]3 years ago
6 0

\text{Solve the equation:}\\\\2x^2-11=87\\\\\text{Add 11 to both sides}\\\\2x^2=98\\\\\text{Divide both sides by 2}\\\\x^2=49\\\\\text{Square root:}\\\\x=\pm\sqrt49\\\\\text{This means that the answer could be 7 or -7}\\\\\boxed{\text{x=7 or x= -7}}

Sloan [31]3 years ago
5 0

Answer:

it would be a 7 or -7

Step-by-step explanation:

i just did it

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After 2 hours, Ernie had travelled 192 miles. If he travels at a constant speed, how far will he have travelled after 5 hours?
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Answer:

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Step-by-step explanation:

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4 0
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vredina [299]

Answer:

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Step-by-step explanation:

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3 years ago
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3 0
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RideAnS [48]
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JUST HELP ME ITS DUE IN5 MINUTES:"( ASAP <3
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Answer:

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