Answer:
x= 16 and y = 9
Step-by-step explanation:
1 st equation ; x+y = 25
2 nd equation ; x- y = 7
from 1 st equation
x = 25 - y
now putting value of x in 2 nd equation
x- y = 7
25 - y-y = 7
25 -2y =7
25-7 = 2y
18 = 2y
18/2 = y
y = 9
again
putting value of y in 1 st equation
x = 25-y
x = 25-9
x= 16
8^2-6^2=28
the square root of 28 is 5.29
5.29×2=10.58
x=10.58
Answer: the third one
Step-by-step explanation:
Answer:
x = 17
Step-by-step explanation:
-2x+8-6=-32
lets isolate the x variable:
-2x=-32-8+6
-2x = -34
x= -34/-2
x= 34/2
x= 17
Answer:
8 9/10
Step-by-step explanation:
89 goes into 10 8 times.
8x10=80.
89-80=9
So the answer is 8 9/10
