Brad took five kicks. He made four goals: 4/5. Sydney took 10 kicks. She wants to make an equivalent fraction of the goals. How many goals does she have to make to be equal to 4/5?
Since Brad made 4 goals out of 5 kicks, we can represent this as a fraction: 4/5.
To find an equivalent fraction, we need the denominator to be multiplied by the same number. In this case, we need to multiply it by 2: 5 x 2 = <<5*2=10>>10.
To find the equivalent numerator, we multiply the numerator by the same number we multiplied the denominator by: 4 x 2 = <<4*2=8>>8.
Therefore, Sydney needs to make 8 goals to be equal to 4/5. Answer: \boxed{8}.