Answer:
x=½
y=5
Step-by-step explanation:
(8x+7y=39)2
16x+14y=78
<u>4</u><u>x</u><u>-</u><u>1</u><u>4</u><u>y</u><u>=</u><u>-</u><u>6</u><u>8</u> add the two equations
20x=10.
divide both sides by 20
x=½
8x+7y=39
4+7y=39
7y=39-4
7y=35
y=5
Answer:
C -8
Step-by-step explanation:
Hope it helps :)!!
The answer would be more likely 2
Answer:
43 & 96
Step-by-step explanation:
x=one number
y=other number
x+y=139
x-y=53 x=y+53
substitute for x
y+53+y=139
reduce
2y+53-53=139-53
2y=86
2y/2=86/2
y=43
x=96
Answer:
4x^2 -16
Step-by-step explanation:
(2x + 4)(2x - 4)
FOIL
first:2x*2x = 4x^2
outer: -4 *2x = -8x
inner: 4*2x = 8x
last: -4*4 = -16
Add them together
4x^2 -8x+8x =-16
4x^2 -16
