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SSSSS [86.1K]
3 years ago
13

Evaluate the expression for s = -2. -15s2 - 9-5 + s) =

Mathematics
1 answer:
Fudgin [204]3 years ago
6 0

Answer:

123

Step-by-step explanation:

s=-2

-15s^2-9(-5+s)

=-15s^2+45-9s

=-15s^2-9s+45

=15(-2)^2-9×(-2)+45

=15×4+18+45

=60+18+45

=123

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3 years ago
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Hey there!

A reciprocal might be an unfamiliar vocab word, but the concept is really quite simple.

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So we have:

Reciprocal of 9/10 is 10/9, because 9/10 times 10/9 = 90/90 = 1

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