Answer:
x+y=-8
Step-by-step explanation:
y-x=4
x=3y
y-3y=4
x=3y
-2y=4
x=3y
y=4/(-2)
x=3y
y=-2
x=3*(-2)
x=-6, y=-2 then
x+y=-6-2=-8
Answer:
1 23/25
Step-by-step explanation:
3 1/5 * 3/5
Change the mixed number to an improper fraction
(5*3+1 )/5 = 16/5
16/5 * 3/5 = 48/25
Change to a mixed number
25/25 + 23/25
1 23/25
You need to bring the right to the left
2X^2-9x-x^2+20=0
So you combine and get
X^2-9x+20
(X-4)(X-5)
Cuz -4 times -5 =20 and -4+-5=-9
So solve X-4=0. X-5=0
X=4. X=5
