Brett and Jim sign up to run in the Memorial Day race in their town. There are two different events at this race, a 5K (5 kilometers) and a 10K (10 kilometers). Brett signed up for the 5K and Jim signed up for the 10K.

what's the question?

step-by-step explanation:

there is no question.

c.

step-by-step explanation:

she should of added 9^2 and 12^2. that is because it is a^2+b^2=c^2. c^2 is the hypotenuse and should always be bigger than the other two numbers. which is why she should of added 9 squared and 12 squared together instead of 15 squared.

sinn is the total amount of students now and m were the students before, you subtract them both (n-m) and divide that by m. then, since to get a percentage from a fraction you have to multiply by 100, your answer should look like this: n-m/m*100

step-by-step explanation: