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Ann [662]
3 years ago
5

What is the value of -9r - 7 when r=2

Mathematics
1 answer:
OLEGan [10]3 years ago
4 0

Answer:

-25

Step-by-step explanation:

Substitute r = 2 in the equation.

-9(2) - 7 = -18 - 7 = -25

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2, 3, 5, and 7 are the primes that are less than 10.  Of these, 5 and 7 are largest, so our answer is 5+7=12.
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Let x be the volume (liters) of pure (at 100%) acid needed
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Answer:

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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