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IceJOKER [234]
1 year ago
11

Which expression is equivalent to 2 (14x-37+28x+12.2-5y-17.5)?

Mathematics
1 answer:
ziro4ka [17]1 year ago
7 0

Answer:

A. 84x - 16y - 10.6

Explanation:

\sf \rightarrow 2(14x-3y+28x+12.2-5y-17.5)

\sf \rightarrow 2 (42x-8y-5.3)

apply distributive method: a(b + c) = ab + ac

\sf \rightarrow 2 (42x) -2(8y)-2(5.3)

\sf \rightarrow 84x -16y-10.6

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vladimir2022 [97]
Total price equals 4 hoodies times (original price minus $5).

x= original hoodie price

$120= 4(x-5)
Use distributive property to multiply
120=(4*x) - (4*5)
120= 4x - 20
Add 20 to both sides
140=4x
Divide both sides by 4
$35= x

Original hoodie price was $35.

Hope this helps! :)
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3 years ago
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2 years ago
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Step-by-step explanation:

6 0
2 years ago
A customer works into a post office to purchase stamps. she purchases a total of 45 stamps. some of the stamps are 49cent stamps
baherus [9]

Step-by-step explanation:Let number of 49 cents =A

                                             Let number of 33 cents=B

<u>A+B=45    equation 1</u>

1 $=100 cents

49 cents =.49 dollar

33 cents=.33 dollar

so .<u>49A+.33B=17.89    equation 2</u>

Add equation 1 and equation 2

since these are simultaneous equations

.49A+.33B=17.89

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so divide equation 2 by 100 we get

49A+33B=1789

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<u>33A+33B=1485     equation 3</u>

so subtract equation 3 from equation 2 we get

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<u>33A+33B=1485    equation 3</u>

<u>16A+0      =304</u>

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putting nalue of A in equation 1 we get

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B=26

so number of 49 cent stamps are 19

and number of 33 cent stamps are 26

5 0
2 years ago
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