Step-by-step explanation:
18x+3xy+5y-12xy+4y-8=18x-9xy+y-8
Answer:
the answers are Band C
Step-by-step explanation:
B. using the number line n greater than -8
C.8=4.2
8=8
Answer:
I'm a bit rusty. But try 58x +21
Hope I helped you.
Katalin drove 300 miles on her vacation. She drove an average of 1.9 times faster on the second 150 miles of her trip than she did on the first 150 miles of her trip. Which expression represents the time she spent driving? Let x = her speed on the first half of the trip.
228.95x
Answer:
x = - 7, x = 1
Step-by-step explanation:
Given
x² + 6x = 7
To complete the square
add ( half the coefficient of the x- term )² to both sides
x² + 2(3)x + 9 = 7 + 9
(x + 3)² = 16 ( take the square root of both sides )
x + 3 = ± 
= ± 4 ( subtract 3 from both sides )
x = - 3 ± 4
x = - 3 - 4 = - 7
x = - 3 + 4 = 1
Solution set = { - 7, 1 }
