How do you change a ratio into a fraction baseballs to basketballs

The perimeter of a triangle is 69 cm. the first is 5 cm shorter than the second side. the third side is twice as long the first side. find the length of each side

Suppose a pendulum is l meters long. the time,t,in seconds that it tales to swing back and forth once is given by t=2.01

F(x) = 1/x g(x)=x-4 can you evaluate (g*f)(0) ? why or why not?