<em>The answer is -2/5.</em>
(3/5+1/5)+(4/5-2/5)-(9/5-1/5)=
(4/5+2/5)-8/5=
6/5-8/5=
-2/5.
Answer:
3 years
Step-by-step explanation:
160 per year, 160*2=320, 160*3=480
Step-by-step explanation:
1. x = 1/2 or 3
2. x = 3 or 2
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Δ(discriminent) = b²-4ac
Calculate Δ of: -2x² + 6x +13, where:
a= -2
b=6
c=13
THEN Δ = 6² - 4(-2)(13) = 36 -4(-26) = 36 +104 and Δ = 140