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jek_recluse [69]
3 years ago
11

Please help!!!! i confused

Mathematics
1 answer:
Ksju [112]3 years ago
6 0

Answer:

C.28

Step-by-step explanation:

Area of a triangle=(base*height)/2

Base=8, Height=7

8*7/2=28

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164×13.7/100=22.47 kg
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Akiko is making a pizza. The radius of the pizza is 19 inches. What is the circumference of the pizza (use 3.14 for pi and round
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Answer:

≈119.3

Step-by-step explanation:

The area for circumference is as follows:

C = 2\pi r\\or\\C = d\pi

The above equations mean the same thing, because the diameter is just 2 times the radius.

Anyhow, we insert this value into the equation...

C = 2\pi(19)\\C = 38(3.14)\\C = 119.32\\

This rounds to:

≈119.3

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A line contains the point (2,1) and has a slope of -2. what is the equation
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Answer:

The equation of this line would be y = -2x + 5

Step-by-step explanation:

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Suppose a car repair company changes the oil of 50 cars and they recover an average of 3 1/2 quarts of oil from each car.How man
Lelu [443]

Answer:

They recover <u>43.75 gallons</u> of oil.

Step-by-step explanation:

A car repair company changes the oil of 50 cars and they recover an average of 3 1/2 quarts of oil from each car.

Now, to find the gallons of oil they recover.

Number of cars the car company changes the oil = 50.

Quantity of oil they recover from each car = \frac{7}{2} \ quarts.

Now, to get the total quantity of oil they recover we multiply number of cars the car company changes the oil by quantity of oil they recover from each car:

<u><em>Number of cars the car company changes the oil × Quantity of oil they recover from each car.</em></u>

50\times \frac{7}{2}

=50\times 3.5

=175\ quarts.

<u>The car company recovers 175 quarts of oil.</u>

Now, to get the gallons of oil we convert the quarts into gallons by using conversion factor:

<em>1 quart = 0.25 gallon.</em>

<em>175 quarts = 0.25 × 175 gallons.</em>

<em>175 quarts = 43.75 gallons.</em>

Therefore, they recover 43.75 gallons of oil.

8 0
3 years ago
Read 2 more answers
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