Answer:
X=1 Y=6
Step-by-step explanation:
6x=-4x+10
10x=10
x=1
6×1=6
Answer:
90 degrees
Step-by-step explanation:
360/4=90
Answer:

Step-by-step explanation:
Divide both sides by 9 to isolate x:

Hope this helps!
<span> r+5 </span><span>r^2+4r-21
</span><span>-------------- / --------------------
r^2+5r-14 </span><span>r-2
</span> r+5 r-2
= -------------- x --------------------
r^2+5r-14 r^2+4r-21
r+5 r-2
= -------------- x --------------------
(r+7)(r-2) (r+7)(r-3)
r+5
= -----------------
(r+7)^2 (r-3)
i dont know, sorry...............................................