A.
a < 18 and a may be a negative number
B.
a < 18 and a must be a positive number
C.
a > 18 and a may be a negative number
D.
a > 18 and a must be a positive number
B. 18,984
C. 189,840
D. 1,898,400
Answer:
I think C is your answer.
It's just a guess.
Step-by-step explanation:
1. 3/7 A. Rational
2. 0.78( repeating) B. Irrational
3. Square root 7/9
4. 5 pi
-9 and -4
-4 and 9
4 and -9
9 and 4
Answer:
-4 and 9
Step-by-step explanation:
factored
(x - 9)(x + 4) = 0
with this x*x - 5x - 36 = 0
so x = 9 or x = -4