Answer:
x=5 m=3
Step-by-step explanation:
Circumference of a circle formula is 2
r
2 ×
× 80
=160 × <span>
=502.4 m
She skates 502.4 m.</span>
X= number of student tickets
Y= number of on student tickets
x+y=311
0.50x + 1.50y = 385.50
Solve x in 1st equation
X+y=311
X= -y + 311
Now substitute x into second equation to solve for y
0.50(-y+311)+ 1.50y = 385.50
-0.50y+311.50+1.50y=385.50
Y+311.50=385.50
Y= 385.50-311.50
Y= 74
Now substitute y answer to first equation to find x
X+y=311
X+ 74=311
X= 311-74
X= 237
So 237 students tickets and 74 non students tickets
7(x+1)=63
7 times a number(x) +1
