Answer:
z = 60
Step-by-step explanation:
100+20+z=180
120+z=180
z=60
Poetry has always been used as a vehicle of enlightenment, By expressing mathematics formula poetically, you can impact knowledge across the board.<span />
X+3=61
x=61-3=58
58+37=95
180-95=85
so x=58 and y=85
X has infinity solutions.
Answer:
C. -7x^2 - 28
Step-by-step explanation:
Firstly simplify the bracket before doing anything;
4x(3x - 7) = 12x^2 - 28x
then go back to the question and substitute the expression(12x^2 - 28x) on the bracket and then work out the question;
12x^2 - 28x -19x^2...then group the values with the same exponent of x,
(12x^2 - 19x^2) - 28x
; -7x^2 - 28x
