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kondor19780726 [428]
3 years ago
13

What is the sum of -9 and -18?

Mathematics
2 answers:
Volgvan3 years ago
6 0
-9+-18=-27 You simply add the two negative answers to find your final answer. -27
Tcecarenko [31]3 years ago
3 0

Answer: The answer to the question you asked up top would be -27, however the question in the picture doesn't match. As for the question in the picture, the answer is should be choice B or  4 square root 2i

Step-by-step explanation:

The first one: add the number together since they are both negative and just place a negative sign in front.

The second one: break down the square root of -18 into 9*-2. Then add   \sqrt{-2} +  3 \sqrt{-2}  which equals 4\sqrt{2}i

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2 years ago
15 is 30% of what number?
777dan777 [17]
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3 years ago
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3 years ago
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Step-by-step explanation:

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