IrvingBalls103 IrvingBalls103

09-06-2015
Mathematics

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What is the value of n in the equation 0.2(n - 6) = 2.8?
(1) 8 (3) 20
(2) 2 (4) 44

Respuesta :

SchwarzschildRadius SchwarzschildRadius

16-06-2015

So,

0.2(n - 6) = 2.8

Distribute.
0.2n - 1.2 = 2.8

Add 1.2 to both sides.
0.2n = 4

Divide both sides by .2.
n = 20

Check.
0.2(20 - 6) = 2.8

Simplify inside parentheses.
0.2(14) = 2.8

Multiply.
2.8 = 2.8 This checks.

S = {2.8}

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