How many 4-digit numbers can be formed using the numbers 4, 5, 6 and 7? How many of the 4-digit numbers are less than 7000?

Evaluate the expression a^2+6ab for a = - 2 and b=4

What is the 30th term of the linear sequence below? - 5 , - 7 , - 9 , - 11 , - 13 , . . .

Solve for x. Round your answer to two decimal places. Show your work for full credit. A right triangle is shown with the hypotenuse labeled x. One angle has a measure of thirty degrees, and the opposite leg has a length of ten.

What is x, 7/8*x equals 1

Jeanie drank 1/3 cup of juice and Harry 1/4 drank cup of juice. How much juice did they drink altogether?

Two airplanes left an airport at the same time traveling in opposite directions. One travels at a speed of 190 miles per hour. The other travels 210 miles per hour. How long will it take for the planes to be 2000 miles apart?

Use the shell method to find the volume of the solid generated by revolving the regions bounded by the curves and lines about the y-axis. y = x^2, y = 10 - 9x, x = 0, for x ≥ 0

Which expressions are equivalent to - 2y-8+4y

what is the scientific notation of 0.0008235

In one month you earned $100 delivering newspapers if you deposit the money in a savings account with a simple interest rate of 12% how much interest will you earn in six months