Answer:
b=-19
Step-by-step explanation:
We know that one of the solutions is x=-4/5
That is a solution to x. So if we plug in (-4/5) into the x in the equation, then it should equal 0.
5(-4/5)^2+b(4/5)+12=0
Now, just solve for b.
5(16/25)+b(4/5)+12=0
(16/5)+(4/5)b+12=0
(76/5)+(4/5)b=0
(4/5)b=-(76/5)
b=-19
Answer:
45 is the answer
Step-by-step explanation: 45 it is
Answer:
Step-by-step explanation:
x + 115 + 95 + 70 = 360 ( being sum of angles of quadrilateral )
x = 360 - 115 - 95 - 70
x = 80