Answer:
B.) 18
Step-by-step explanation:
To find the correct b value we use this formula
b² - 4ac = 0
b = What we are solving for
a = 1
c = 81
b² - 4(1)(81) = 0
b² - 324 = 0
b² = 324
b = ±18
And 18 is one of the answer choices
So B.) 18 is the correct answer.
Answer:
8
Step-by-step explanation:
On what point is A located? As in (x,y).
X - the number
the quotient of the number and 8 = x/8
10 more than the quotient of the number and 8 = (x/8)+10
10 more than the quotient of the number and 8 is at least 12 = (x/8)+10≥12
Answer:
3. C
4. D
Step-by-step explanation:
3.
Once 
4.
A quadratic equation has no real roots when the discriminant (
) is negative. 
.
Let's try all the equations:
(A)
(B)
(C)
(D)
