How to prove that square root of x where x is rational is rational?

What is 28.75 to the nearest whole number?

If a central angle of measure 30° is subtended by a circular arc of length 6 meters, as is illustrated below, how many meters in length is the radius of the circle?

Sorry I only have a few more its a 15 question test 1,368.5 * 10.8

What is 5 4/9 + (3 1/2 - 1 2/3

What is a rule for the sequence 1.8, 2.85, 3.90, 4.95, 6

Solve the equation 3x + 2 = 4x + 5 using algebra tiles. Which tiles need to be added to both sides to remove the smaller coefficient? Which tiles need to be added to both sides to remove the constant from the right side of the equation?

The quotient of 300 and the sum of b and 24

Using linear combination method what is the solution to the system of linear equations 7X - 2Y = - 20 and 9X + 4Y = - 6

I will mark you as the Brainliest if you answer the question first Each baseball team has nine players and each football team has eleven players. Five schools have both baseball and football teams. Three schools have only a baseball team.

The variable z is inversely proportional to x. when x is 12, z has the value 0.25. what is the value of z when x = 19