There is no answer? So how am I supposed to answer it?
Answer:
Step-by-step explanation:
we know that
Let
x ------> new battery life
The equation that represent this situation is
convert to mixed number
Answer:
Step-by-step explanation:
(-3x + 2)(45x + 21) + (-4x + 25) = 50
-135x^2 - 63x + 90x + 42 - 4x + 25 = 50
-135x^2 + 23x + 67 = 50
-135x^2 + 23x + 67 - 50 = 0
-135x^2 + 23x + 17 = 0
quadratic formula : x = (-b ± √b^2 - 4ac)/2a
a = -135, b = 23, c = 17
x = -23 ± √23^2 - 4(-135)(17) / (2(-135)
x = (-23 ±√9709 )/ -270
x = 23/270 ± 1 / 270√9709/270
x = 0.4501 or x = - 0.2798 <=== these answers are rounded
Ok so you would just take the two fractions and simply if needed and that the answer!
Answer:
4 * (3 + 5)
4 * 8
<u>32</u>
Step-by-step explanation:
