Answer:
The mean is 
Step-by-step explanation:
Since there is no image given, the perimeter is the sum of measurement of the sides of the triangle. Assuming that the triangle is equilateral. Then the perimeter of the triangle is equal to
P = x + x + x
P = 3x
P = 30 mm
280 students have a total of 560 points
There 60 more boys(x+60) complete than girls(x)
2*(x+60)+2*x= 560
number of girl =x =110
girl point =110*2= 220
Answer:
it has infinitely many solutions because it can be solved by many technics
Step-by-step explanation:
hope my answer helps mark me brianliest plz