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givi [52]
2 years ago
11

Alan bought a package of 6 socks for $8.99. Brittney bought a package of 12 socks for $16.25. which was the better buy? explain

Mathematics
2 answers:
Yuri [45]2 years ago
4 0

Answer:

Brittney’s was the better buy.

Step-by-step explanation:

The first option was 1.49 per unit and the second was 1.35 per unit.

elena55 [62]2 years ago
3 0

Answer:

12 socks for $16.25.

Step-by-step explanation:

divide 8.99 by 6 you get 1.49.

divide 16.25 by 12 you get 1.35.

clearly, the second one is cheaper.

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Step-by-step explanation:

7 0
2 years ago
Alba worked for 6 hr 45 min at $7.90 per hour. What numbers could she use to estimate how much money she earned? Estimate the am
Svetradugi [14.3K]

Answer:

  • $52
  • this estimate is a little low

Explanation:

a) I might choose 6 1/2 hours and $8 per hour, so the estimated earnings would be ...

  6(8) +(1/2)(8) = 52 dollars . . . . estimated earnings

These values are purposely chosen so that one is a little high and the other is a little low, hopefully producing a closer estimate than if both numbers were high (as 7 hours, $8, for example).

__

b) Using 800 instead of 790 means the pay estimate is about 1/80 = 1.25% high.

Using 6 1/2 instead of 6 3/4 means the hours estimate is about 1/27 ≈ 3.7% low.

So, we expect the product of these values to be slightly low, perhaps by about 2.5%.

_____

<em>Comment on estimating</em>

If you can estimate the error in the estimate with some reasonable accuracy, you can use that to adjust the estimate to a pretty close value.

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