Answer:
21
Step-by-step explanation:
Answer:
Factoring
Step-by-step explanation:
x^2 + 7x = x(x + 7) = 0
So
x = 0 or x = -7
Answer:
which one?
Step-by-step explanation:
9514 1404 393
Answer:
(b) √65
Step-by-step explanation:
The modulus of a complex number is the root of the sum of the squares of the real and imaginary parts.
|1 -8i| = √(1² +(-8)²) = √(1+64) = √65
Y=k/x
2.5=k/6
k=15
wheny x=4, y=15/4
y=3.75
