Answer:
The discriminant of ax^2+bx+c is b^2-4ac.
If the discriminant, d, is:
d<0, there are no real solutions (there are two imaginary solutions however)
d=0, there is one real solution
d>0, there are two real solutions
In this case d=16-32=-16 so there are two imaginary solutions. Or from your answer choices, it can be said that there are no real number solutions becuse the discriminant is less than zero.
Answer:
Step-by-step explanation:
Answer:
(7,-1)
Step-by-step explanation:
4x + 8y = 20
-4x+2y=-30
Add the two equations together to eliminate x
4x + 8y = 20
-4x+2y=-30
------------------------
10y = -10
Divide each side by 10
10y/10 = -10/10
y=-1
Now we need to find x
4x+8y = 20
4x+8(-1) = 20
Add 8 to each side
4x +8-8=20+8
4x = 28
Divide each side by 4
4x/4 =28/4
x =7
Answer:
n = 81
Step-by-step explanation:
The left angle in the upper triangle and 44° are Alternate angles and congruent.
The exterior angle of a triangle is equal to the sum of the 2 opposite interior angles.
n is an exterior angle of the upper triangle, thus
n = 44 + 37 = 81
Answer:
-20x^2-22x-17
Step-by-step explanation:
Hope this helps :) (the ^ is supposed to be a 2)