2 years ago

Express 4.16×(10)^3 in standard form

1 answer:

8 0

Since it is to the third, we move the decimal point three places over to the right:

4.16 ---> 4,160

What ever the power, move it over that amount.

If the power is negative,move it that amount to the left, making it smaller.

Hope this helps!

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A person on a moving sidewalk travels 40 feet in 8 seconds. The moving sidewalk has a length of 200 feet. How long will it take

beks73 [17]

Answer:

The man covers 200 ft in 40 seconds.

Step-by-step explanation:

A person is moving on the sidewalk from one end to the other end.

He walks 40 feet in 8 seconds.

Therefore his speed = $\frac{distance covered}{time}$

= $\frac{40}{8}$

= 5 ft/ $s^{2}$

He covers the sidewalk distance at a rate of 5 feet every second.

To calculate the time taken to cover 200 ft,

time = $\frac{distance to be covered}{speed}$

time = $\frac{200}{5}$

<u>time = 40 seconds</u>

Hence the man covers 200 ft in 40 seconds.

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3 years ago

Brian says that the expression 8n + 2 is equal to 83 when n=1. Explain why Brian’s answer is incorrect?

GalinKa [24]

Answer:

8n+2 first let’s plug in n which is 1

8(1)+2=10

The answer is 10 but Brian said the expression is equal to 83. He is incorrect because 8 times 1 is 8 and then plus 2 is 10.

I hope it helps.

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2 years ago

Mike’s doctor recommended that he increase the time he exercises each day from 20 minutes to 30 minutes. By what percent did the

dimaraw [331]

Answer:

1 dsd

Step-by-step explanation:

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2 years ago

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What is the scale factor of a model car if the scale is 1 inch=2 feeet

crimeas [40]

1 foot = 12 inches
1in : 2 feet
1in : 24in

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3 years ago

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What is 18.5% of 500?

denis-greek [22]

Answer:

92.5

Step-by-step explanation:

18.5% = 0.185

0.185 x 500 = 92.5

Hope that helps!

4 0

2 years ago