Answer:
x = 6 and x = -7
Step-by-step explanation:
(x - 6)(x + 7) = 0
x - 6 = 0
x = 6
and
x + 7 = 0
x = -7
Answer:
You already have what you are going to substitute, just put the y values from the first equation into the second! Like this:
6x - 5(-2x - 9) = -19
Multiply it out:
6x +10x +45 = -19
Add like terms + simplify:
16x + 45 = -19
16x = -64
x = -4
take that x and put it back into the first equation!!
y = -2(-4) -9
y= 8-9
y= -1
so... your answer is (-4, -1)
hope this helps!
Answer:
$425
Step-by-step explanation:
500 × 0.15 = 75
500 - 75 = 425
Answer:
2
Step-by-step explanation:
2u+10=22+u
or,2u-u=22-10
or, u=2____1
Number 6 is 3/10
Hope this helped