D. 10.0013
=
Then you have to cross multiply so 25*2=5x
Solve for x.
50=5x.
50/5=5x/5
10=x
Answer:
90°-40°
=50°
50°÷2
=25°
Step-by-step explanation:
2a+10b-c + -3a +5b + c = -a +15b
One side: y+4
Second side: y+4+2=y+6
Third side: 2(y+4)-3= 2y+8-3= 2y-5
Perimeter = y+4+y+6+2y-5= 4y+5