It should be the first one since the x and y cross each other out and leave only =-10
Answer:
Step-by-step explanation:
let the integers be x and y
x+y=-20
y=-20-x
xy=99
x(-20-x)=99
-20x-x²=99
x²+20x+99=0
x²+11x+9x+99=0
x(x+11)+9(x+11)=0
(x+11)(x+9)=0
x=-11,-9
when x=-11
-11+y=-20
y=-20=11=-9
when x=-9
-9+y=-20
y=-20+9=-11
so integers are -11,-9
Answer:
x = 30
Step-by-step explanation:
2x + 90° + x = 180°
3x + 90° = 180°
3x = 90°
x = 90/3
x = 30
Answer:
17.25
Step-by-step explanation:
im not sure with the answer without a photo.formula to find area is LENGTH×WIDTH so there u can find it
Answer:
8 kiwis
Step-by-step explanation:
(÷4)32=$16(÷4)
8 =$4
hope this helps
