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3 years ago

Pls help me it’s emergency plzz fast

Mathematics

1 answer:

earnstyle [38]3 years ago

7 0

Answer:

67.3%

Step-by-step explanation:

Calculate profit = selling price - cost price

cost price = 50 × $28 = $1400

38 × $49 = $1862

12 × $40 = $480

selling price = $1862 + $480 = $2342

Profit = $2342 - $1400 = $942

% profit = $\frac{profit}{cost}$ × 100%

= $\frac{942}{1400}$ × 100% ≈ 67.3% ( to 1 dec. place )

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4vir4ik [10]

19.625cm squared because you have to divide the diameter by 2 to get the radius.

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= 19.625cm squared

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2 years ago

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8 0

2 years ago

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It takes 12 hours for 7 men to paint a room.

dangina [55]

28 men are needed to paint the room in 3 hours

<h3><u>Solution:</u></h3>

Given that it takes 12 hours for 7 men to paint a room

We are asked to find number of men required to paint the room in 3 hours

Recognize, "paint the room" is 1 task. One job.

7 men -------- 12 hours ------ 1 job

(7/7) = 1 men ------- 12 x 7 (84) ------- same 1 job

The one men is rate is 84 hours to do the job

We can express this as 1/84 jobs per hour, the one-person rate

Now lets find how many men needed to paint the room in 3 hours

Let the required number of men for 3 hours be "a"

The rates of each person is simply additive.

$a \times \frac{1}{84} \times 3 = 1$

corresponds to rate x hours = jobs and "a" is a variable for how many men

$a \times \frac{1}{28} = 28$

Thus 28 men are needed to paint the room in 3 hours

4 0

2 years ago

Order these numbers from least to greatest:<br><br> 4<img src="https://tex.z-dn.net/?f=%5Cpi" id="TexFormula1" title="\pi" alt="

Elena L [17]

Answer:

18,14,9

Step-by-step explanation:

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2 years ago

The Garcia family started the day with 2 gallons of milk. They drank 111 quart of milk for breakfast and 3 pints for lunch.

irina1246 [14]

3 pints

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3 quarts is the same as 6 pints. They drank 3 pints at lunch. This means 6 - 3 = 3. After lunch, there were 3 pints left.

6 0

2 years ago