Factor Completely: x2 - 81

A. (x-9) (x+9)

B. (x+9) (x+9)

C. (x-9) (x-9)

D. (9-x) (9+x)

The fitted intercept in a regression has little meaning if no data values near X = 0 have been observed. a. true. b. false.

3x-5y=7, x=2y+4 solve by system of equation

Model and solve for 0.2 x 0.3

What is the diffrence between 4x (4 to the power of x) and x4 (x to the power of 4) ? evalutate both of these expressions when x=2

What is the square root of x3 + x-8 =

Fine two consecutive even integers such that twice the smaller is 26 more than the larger.

The ratio of zebras to elephants at the zoo is 6:5. The ratio of Gorillaz two zeros is 7:2. There are 30 zebras at the zoo. How many elephants are there? How many gorillas are there

A telephone number consists of seven digits, the first three representing the exchange. how many different telephone numbers are possible within the 537 exchange? the answer is.

Kenny's weight is 6/7 times Melvin's weight. How many times the total weight of the two boys in Kenny's weight?

The area of a semicircle is 2 times the area of a circle. True or False?