Answer:
x=0
y=-21/7
Step-by-step explanation:
Let the two unknown be x and y
x+y=-7...(1)
x-y=14...(2)
From (1) make x the subject of formula
x=-7-y...(3)
Substitute (3) into (2)
-7-y-y=14
-7-2y=14
Add 7 to both sides
-2y=21
Add both sides by-2
y=-21/2
Substitute the value of y into (3)
x=-7-(-21/2)
x=-7+21/3
Lcm
x=-21+21/3
x=0/3
x=0
Answer:
1 foot long
Step-by-step explanation:
If this fraction is closer to one it will be close to 16/16. And since 8 is half of 16, any fraction that is around 8/16 is closer to 1/2. 15 is closer 16 so this fraction is closer to one.
Answer:
Step-by-step explanation:
l=8

Answer:
-14.5
Step-by-step explanation:
- Take - common: -(11.0+3.5)
- Just add them in the bracket: -(14.5)
- Remove the bracket: -14.5
<span>f(x) = x2 − 16
y = x2 - 16
x = y2 - 16
+ 16 to both sides
x+16 = y2
divide both sides by 2
1/2x+8 = y</span>