3 years ago

Find – 8 + (-15) A: 23 B: -23 C: -7 D: 7

Mathematics

2 answers:

adell [148]3 years ago

6 0

Answer:

B: -23

Step-by-step explanation:

$-8+(-15)\\\\-8-15\\\\\boxed{-23}$

Option B should be the correct answer.

Hope this helps.

malfutka [58]3 years ago

4 0

B. -23
You add and keep the negative symbol since they are both negatives and you are adding.

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Given $a \equiv 1 \pmod{7}$, $b \equiv 2 \pmod{7}$, and $c \equiv 6 \pmod{7}$, what is the remainder when $a^{81} b^{91} c^{27}$

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$a^{81}\equiv1^{81}\equiv1\pmod7$

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