Answer:
Step-by-step explanation:
a - 4x-4 - 6x + 10 = 10x -16
Simplified: -23x+71
15-8(3x-7)+x
distribute
15-24x+56+x
combine like terms
-23x + 71
Answer:
Yes: (3,4,5)
Step-by-step explanation:
10² = 6² + 8²
(10/2)² = (6/2)² + (8/2)²
5² = 3² + 4²
25 = 9 + 16
25 = 25
The sides satisfy the pythagoras theorem
10 is the hypotenuse, 6 & 8 are the legs
5 is the hypotenuse, 3 & 4 are the legs
x = -2
y = 1
let's multiply second equation by 4 to get a common coefficient of y variable.
16x-8y=-40
add the equations
3×+8y=2
16x-8y=-40
----------------
3x+16x = -38
19x = -38
x = -2
substitute x
3×-2 + 8y = 2
-6 + 8y = 2
8y = 2+6
y = 1
check the answer
-6+8 = 2
-8-2= -20
You add up all the numbers then divide the total by how many numbers you had originally
