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Murrr4er [49]
3 years ago
10

Describe two different ways that you could find the product 8 x 997 using mental math. Find the product and explain why your met

hods work.
Mathematics
1 answer:
jolli1 [7]3 years ago
5 0
One method is to round 997 up to 1000, multiply by 8, and then subtract 8 times 3. This would give you the solution of 7976.

Another method (Which I personally wouldn't use) is to recursively double 997. This is more difficult, although effective. After you double 997, double the resulting number, and then double the resulting number from that, you have the solution. This is because 2^3 is 8. 
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Answer:

Step-by-step explanation:

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Next, we divide both sides by -2, obtaining -1 = 2(1 - 6x), and then

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Simplifying this result, we get 1 = 4x, or x = 1/4

We conclude that -2(11-12)=-4(1-6x)​ has ONE solution, which is x = 1/4

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2 years ago
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X/7= -3
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