To have 2 real number solutions the discriminant b^2 - 4ac must be greater than zero.
so the condition for 2 real roots in this equation is:-
b^2 - 4*1*5 > 0
b^2 > 20
b > sqrt 20 ( positive root) Answer
Answer:
y =x^2 +8x +15
factories form
y =( x+5 )( x+3 )
x intercept where the graph meet the x axis
y = x^2 +8x +15
let y =0
0 = x^2 +8x +15
0 = ( x + 5) (x+3)
o = x+5 or 0 = x+3
-5 = x or x = - 3
x intercept
(-5;0)
(-3 ;0)
axis of symmetry : where you will cut the graph into two half
x = - b/2a
x = - 8/2(1)
x = - 8/2
x = - 4
Domain
XER
Range
y > -1
Answer:
Wow, I'm learning this in class right now lol, the answer is C, 42cm cubed.
Step-by-step explanation:
The formula for finding volume fo 3d shapes is area of base x height/length.
In this problem, they give you both of those. 14 x 3 = 42, so the answer is C.
Hope this helped! If it did, please give me brainliest! It would help a lot! Thanks! :D
So midpoint of segment joining B and C is ( 11/2, - 13/2)
