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amid [387]
3 years ago
13

Explain how to add 678 + 303 using mental math

Mathematics
1 answer:
zloy xaker [14]3 years ago
4 0

Answer:

You add it in your mind.

Step-by-step explanation:


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Justin has $110 to spend at the mall. He wants to buy a hat that costs $25 and a pair of jeans that cost $40. He is also thinkin
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Step-by-step explanation:

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Please answer the question in the picture
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A loan of $50,000 is taken out for six years at 9% interest compounded annually. If the loan is paid off in full at the end of that time period, $50433 must be returned.

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5 0
1 year ago
Kevin hiked up lambs Canyon and two hours and then ran back down in one hour has been running downhill was 2.8 mph greater than
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Answer: he hiked 5.6 miles up the canyon.

Step-by-step explanation:

Let x represent his speed hiking uphill.

His speed running downhill was 2.8 mph greater than his speed hiking uphill. This means that his speed running downhill would be x + 2.8

Distance = speed × time

Kevin hiked up Lamb’s Canyon in 2 hours. This means that the distance covered by hiking uphill is 2 × x = 2x

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Since the distance uphill is the same as the distance downhill, then

2x = x + 2.8

2x - x = 2.8

x = 2.8

Therefore, the distance hiked up the canyon is

2x = 2 × 2.8 = 5.6 miles

8 0
3 years ago
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