Answer:
Step-by-step explanation:
8/-4 * -3/9
= (8)(-3) / (-4)(9)
= -24 / -36
= 24/36
= 4/6 (none of the options are the answer)
Answer:
s ≈ - 0.5 , s ≈ 8.5
Step-by-step explanation:
s² - 8s - 4 = 0 ( add 4 to both sides )
s² - 8s = 4
To complete the square
add ( half the coefficient of the s- term )² to both sides
s² + 2(- 4)s + 16 = 4 + 16
(s - 4)² = 20 ( take square root of both sides )
s - 4 = ± 
( add 4 to both sides )
s = 4 ±
Then
s = 4 - ≈ - 0.5 ( to the nearest tenth ) ← smaller solution
s = 4 + ≈ 8.5 ( to the nearest tenth ) ← larger solution
Answer:
Step-by-step explanation:
<u>Let's calculate time for building and testing:</u>
- 5*4 + 15*6 = 110 < 120, yes
- 5*4 + 15*4 = 80 < 100, yes
<u>In general you would need to solve inequalities below:</u>
and
<u>Simplified, we have the system:</u>
I have high hopes it’s 1. 14/8 or 1 3/4
