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MArishka [77]
3 years ago
10

Pls help mee I need help one this it's hard

Mathematics
1 answer:
vlada-n [284]3 years ago
4 0
1 . 7/6 simplify it and you get the total of 1 1/6
2. 1
3. -2/3
4. 3/2 simplify it and you get 1 1/2
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HELPPP
Bingel [31]

I'm not sure if it only wants you to find Equation 1 or go further and solve:

x = the number of 5c coins

y = the number of 10c coins

Equation 1: the total number of coins is 65

x + y = 65

total value of $3.80

0.05x + 0.1y = 3.8

<u>Simultaneous Equations</u>

Make one coefficient the same

10 * (0.05x + 0.1y = 3.80 = 0.5x + y = 38

x + y = 65

0.5x + y = 38

Subtract the equations

(x + y) - (0.5x + y)= 65 - 38

(x - 0.5x) + (y - y) = 65 - 38

0.5x = 27

x = 54

Substitute it into the original equation to find y.

x + y = 65

54 + y = 56

y = 65 - 54 = 11

Substitute it into the other equation to check it's right.

0.05x + 0.1y = 3.8

0.05(54) + 0.1(65) = 3.8

x = 54 5c coins

y = 11 10c coins

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Simples! It's 15,

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Hello Shelbyhall, simply you would multiply 17.50 * 25 because 4 * 25 = 100%. Answer: 437.5 is the other 96% :)
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Answer:

Step-by-step explanation:

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