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Darya [45]
3 years ago
13

How do i do this,proportions I can't understand. please help with 2&4

Mathematics
1 answer:
slava [35]3 years ago
7 0
2)
32/28=w/7
you cross multiply one denominator by the other numerator so
32(7)=(28)(w)
simplify
224=28w
divide 28 from both sides to get w alone
8=w

4)
36/21=24/s
cross multiply just like in the last problem
(36)(s)=(21)(24)
simplify
36s=504
divide 36 to get s alone and essentially solve for s
S=14

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lilavasa [31]

Answer:

Billy has $27.51

Step-by-step explanation:

First let's set up an equation to solve this problem.

Assign a variable to Billy's amount. Let's make it x.

Then we just interpret the problem and solve:

2x - 1.30 = 53.72

     +1.30    +1.30

----------------------------

2x = 55.02

(Divide by 2 on both sides)

----------------------------

x = $27.51

2x = Billy's amount doubled

2x - 1.30 = Taking away 1.30 from double Billy's amount

53.72 = Sara's amount

6 0
4 years ago
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Answer:

Oct.

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3 years ago
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What would be the equation to you have a part time job. You work for 3h on Friday and 6h on Saturday. You also recieve an allowa
HACTEHA [7]

Answer:

Step-by-step explanation:

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In this problem, that is 9 hours per week.

Next, we must question how much per week is made

That is $92 per week

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In this problem, that is only occuring once for the week.

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To solve the equation, we need to subtract 20 on both sides to isolate the variable, x.

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Now our equation is

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<u>9x</u>=<u>72</u>

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