How many 4 - letter words can be formed using the letters a, b, c, d, e and f, if

a) the word must start with a vowel? (cannot be repeated)

b) the word should start and end with a consonant?

An algebra tile configuration. 3 tiles are in the Factor 1 spot: one is labeled + x and 2 are labeled negative. 4 tiles are in the Factor 2 spot: one is labeled + x and 3 are labeled negative.

A researcher is studying the effect of 10 different variables on a critical measure of business performance. In selecting the best set of independent variables to predict the dependent variable, the stepwise regression technique is used.

Which of the following is equivalent to (7x + 3y) (8x + 5y) ?

Directions: Write each fraction in simplest form. 1. 6/21 2. - 8/32 3. 32/40 4. - 16/72

You have 30 days left to read the books on your summer list. As of today, you have read 5 books. By the end of the 30 days, you have to have read 12 books.

The sum of a number and two is equal to the quotient of six and negative four

17 divided by the quantity Z minus 34 what is the expression for the phase

Round 0.9998 to 3 decimal places

Does the shape of the figure change after rotation?

7x+2y=-13 -3x-8y=-23