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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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Akimi4 [234]

Answer:

a) the number of miles in 1 kilometer

Step-by-step explanation:

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So to make the conversion<u> it is enough to know how many miles are in one kilometer.</u>

For example, lets convert 10miles/hour to kilometers/hour.

there are 0.621371 miles in 1 kilometer, so if we divide 10miles/hour by 0.621371 we get kilometers/hour units:

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5 0
3 years ago
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erik [133]

Answer:

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Step-by-step explanation:

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Negate 5b and -3c

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3 0
3 years ago
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ella [17]

Answer:

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I think he bought 14 meduim pumpkins and six large pumpkins.
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3 years ago
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Substitute y=\ln(2x+1) and dy=\frac2{2x+1}\,dx, so that

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1 year ago
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