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3 years ago

Can someone tell me how to do this? I probably learned this but fractions are really confusing...

Mathematics

1 answer:

Stels [109]3 years ago

6 0

So,

17/3 is an improper fraction.

We can immediately see that there are more that 5 3's in the fraction. That uses 15 "3's".
There are 2 more thirds, so the mixed form is

5 2/3

5 2/3 is less than 8, so that is the answer.

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Studentka2010 [4]

Answer:

work

Step-by-step explanation:

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3 years ago

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

3 years ago

Square A has a side length of (2x - 7) and Square B has a side length (-4x + 18). How much bigger is the perimeter of Square B t

stich3 [128]

Answer: 100 - 24x

Step-by-step explanation:

The formula for calculating the perimeter of a square is given by :

P = 4l , where l is the length of the side.

Perimeter of square A will be

P = 4 ( 2x - 7 )

P = 8x - 28

Perimeter of square B will be ;

P = 4 ( -4x + 18 )

P = - 16x + 72

Perimeter of square B - Perimeter of square A implies

-16x + 72 - ( 8x - 28 )

-16x + 72 - 8x + 28

collecting the like terms

-16x - 8x + 72 + 28

-24x + 100

⇒ 100 - 24x

3 0

3 years ago

If you are able to help that will be great:)

Schach [20]

1. 14.3-2*5²÷5=14.3-10=4.3
2. Result is Twenty one

7 0

3 years ago

Pythagorean theorem (picture provided)

const2013 [10]

Answer:

Step-by-step explanation:

To solve for a side using pythag:

$\sqrt{37^2-35^2}$

6 0

3 years ago

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