there are 9000 four digit numbers. 4536 of the four digit numbers have no repeating digits. How many four digit numbers have at least one repeating digit?

An object dropped from a height of 600 feet has a height, h (t), in feet after t seconds have elapsed, such that h (t) = 600 - 16t^2. Express t as a function of height h, and find the time to reach a heigh of 50 feet

James used a substitution to solve this system of equations. Which equation could be a result of his first step? 2x+3y=12 y=x+1.5

What multiplies to 20 and adds up to 9?

What is the value of the 8 in the number 8,644.58

The equality 6-2/3x

The product of any fraction and 1/6 will always be less than 1/6?

When solving negative one over five (x - 25) = 7, what is the correct sequence of operations? A. Multiply each side by negative one over five, add 25 to each side B. Multiply each side by 5, subtract 25 from each side C.

I am the number that is divided in a division problem

Is five ones and eight tenths bigger than fifty eight tenths

Which list shows all the positive factors of 75? A. 1, 3, 15, 25 B. 1, 5, 75 C. 1, 5, 25, 50, 75 D. 1, 3, 5, 15, 25, 75