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Shtirlitz [24]
3 years ago
14

Solve: 12/35 − 5/21 ASAP im not smart

Mathematics
1 answer:
Ostrovityanka [42]3 years ago
7 0

Answer: 11/105

Step-by-step explanation:

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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
3 years ago
If the public debt of the United States of Apex is 9,529,034,179,824,022 Apex dollars and its gross domestic product (GDP) is 16
aivan3 [116]
To compute for the debt-to-GDP ratio, we just have to divide the debt given in this item by the GDP and convert the quotient to percentage. That is,
                debt-to-GDP ratio = (9,529,034,179,824,022)/                              (16,247,683,987,248,007) x 100%
                debt-to-GDP ratio = 58.65%
Thus, the answer is FALSE. 
8 0
3 years ago
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What is 0.316 in expanded form
Inessa [10]
<span>0.316 in expanded form is= 0.3 + 0.01 + 0.006. </span>
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X^2 - 2x + 11 = 0<br> Someone help me. Solve the following using the quadratic formula
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Solve the equation for x by find the A , B , C of the quadratic then applying the quadratic formula 


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3 years ago
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Two similar cones have radil of 6 and 1, respectively. What is the ratio of their volumes?
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There’s my answer. I hope u enjoy ir

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