Sum means add
difference means subttract
x+y=1
x-y=11
add the 2 equations together
2x+0y=12
divide 2
x=6
subitute
6+y=1
subtract 6
y=-5
x=6
y=-5
Answer:
2(2x^2 - x + 1)
Step-by-step explanation:
you write you problem 9x^2 - 2x - 5x^2 + 2 = 2(2x^2 - x + 1)
You collect the like terms by subtracting their coefficients
(9-5)x^2
Subtract the numbers
4x^2
4x^2 - 2x + 2
Factor out 2 from the expression
2(2x^2 - x + 1)
Answer:
Step-by-step explanation:
<u>Missing statement/reasons:</u>
- 1. ABCD is rhombus
- 2. Definition of rhombus- all sides are equal
- 4. SSS (side-side-side) postulate
- 5. Corresponding parts of congruent triangles are congruent
Would it not be 120? Because you subtract from 180 degrees? I haven’t done this math in a while but I believe it is correct