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andre [41]
3 years ago
11

A car travels 0.75 miles every minute. Explain how you could use proportional reasoning to find how far the car travels in one h

our
Mathematics
2 answers:
Elza [17]3 years ago
6 0

Answer:

45 miles.

Step-by-step explanation:

The car is traveling 0.75 miles every minute.

So, we can write that the car is moving in a minute 0.75 miles.

Here, the distance traveled by car is proportional to the time of travel i.e. the rate of distance traveled per minute is constant.

Hence, in 1 hour i.e. 60 minutes the car will travel by (0.75 × 60) = 45 miles. (Answer)

Hoochie [10]3 years ago
4 0

Answer:

in a hour 60 minutes and just multiply 0.75 by 60 and the answer is 45 miles per hour .

just copy and past

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There are special cases where a person can use right and left hand equally well . I.e ambidextrous .

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What is the perimeter of a square with a 13ft side
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3 years ago
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What is the standard deviation of the following data set rounded to the nearest tenth? 56 ,78 ,123 , 34, 67, 91, 20
quester [9]

Answer:

The standard deviation of the following data set is 32.2

Step-by-step explanation:

step 1

Find the mean

we have

[56,78,123,34,67,9,20]

Sum the data and divided by the number of elements

[56+78+123+34+67+91+20]/7=469/7=67

step 2

For each number: subtract the Mean and square the result

[(56-67)^{2},(78-67)^{2},(123-67)^{2},(34-67)^{2},(67-67)^{2},(91-67)^{2},(20-67)^{2}]

[121,121,3,136,1,089,0,576,2,209]

step 3

Work out the mean of those squared differences

[121+121+3,136+1,089+0+576+2,209]/7=1,036

This value is called the "Variance"    

step 4

Take the square root of the variance

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3 years ago
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