dreemasanders866 dreemasanders866

16-10-2018
Mathematics

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What value of a makes the equation true?
1.7a + 0.3a = 4/5
btw 4/5 is a fraction

A. a= 2 4/5
B. a= 1 3/5
C. a= 2/5
D. a= 1 1/5

Respuesta :

jimthompson5910 jimthompson5910

16-10-2018

Answer: C) a = 2/5

1.7a+0.3a simplifies to 2.0a or just 2a. We have the equation 2a = 4/5. If we multiply each side by 1/2, then we can isolate 'a' fully to get

2a = 4/5

(1/2)*2a = (4/5)*(1/2)

(2/2)a = (4*1)/(5*2)

1a = 4/10

a = 2/5

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