The correct answer is the last one
(0,-4)
Answer: 21
Step-by-step explanation: Just plug in the numbers for x, and you get 21 when you plug that in.
X=5, because you would set the equations equal to each other, and then solve by additive inverse. Then, you find the square root by isolating x, from which you get 5.
Answer:
F=140°
Step-by-step explanation:
130+120+110=360
720-360=360
40+60+20=120 360+120=480
480÷3=160 x=160
160-20=140
f=140°
Answer:
Step-by-step explanation:
4x+8=6x-1
<u>-4x . =-4x .</u>
8 = 2x-1
<u>-1+8=2x-1+1 </u>
7=2x
7/2= 2x/2
3.5=x
