3 years ago

Adrian is drawing a map to show the directions from his house to his grandmother's house. He uses a scale of 1 1/2

Mathematics

1 answer:

Nadya [2.5K]3 years ago

8 0

It’s going to be 4 1/2 inches.
36/12=3
3x1 1/2=4 1/2

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The price of a car has been reduced from $14,000 to $8,400. What is the percentage decrease of the price of the car?

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Answer: 40%

Step-by-step explanation:

If you divide 8400 by 14000. You will see that $8400 is 60% (.60 in the calculator) you need to subtract that from 100 to find the discount. 100-60= 40

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3 years ago

Carey baked 10 cookies with 2 scoops of flour. With 3 scoops of flour, how many cookies can Carey bake? Solve using unit rates.

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First find out how many cookies one scoop of flour can make
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Then 1 scoop is --- 10/2
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The maximum grade allowed between two stations in a rapid-transit rail system is 3.5%. Between station A and station B, which

azamat

Answer:

Part a) The grade is 3.2%

Part b) This grade meet the rapid-transit rail standard

Step-by-step explanation:

we know that

The formula of slope is "rise over run", where the "rise" (means change in y, up or down) and the "run" (means change in x, left or right)

In this problem we have

$rise=8\frac{1}{2}\ ft=\frac{8*2+1}{2}=\frac{17}{2}\ ft$

$run=270\ ft$

$\frac{rise}{run}=\frac{17}{2}:270=0.0315$

convert to percentage

$0.0315*100=3.15\%$

Round to the nearest tenth of a percent

$3.2\%$

$3.2\% < 3.5\%$

therefore

This grade meet the rapid-transit rail standard

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3 years ago