Answer:
-4a^2+7a+4 , a=2 or -1/4
Step-by-step explanation:
Take -4 + 3a2 from 7a - a2
It means 7a -a^2 - (-4+3a^2)
7a -a^2 +4-3a^2
7a -a^2-3a^2+4
7a -4a^2+4
-4a^2+7a+4
-4a^2+8a-a+4
-4a^2-a+8a+4
-a(4a+1)+2(4a+1)
(-a+2)(4a+1) =0
-a+2=0 4a+1=0
-a=-2 4a=-1
-a/-1=-2/-1 a=-1/4
a=2 or -1/4
Answer:
625
Step-by-step explanation:
I did mental math hope I got it right
-2r+3≥19
-2r≥16
r≤-8
second one
10 hrs + (15/60)hr
10hrs + 0.25hr
10.25 hrs
Answer:
The y intercept is 80 and the line of the best fit is -3/5
Step-by-step explanation:
