Why can't we add exponents when multiplying different variables

Simplify by combining like terms: - n - 10n - 9n - 3

A triangle area is 60cm^2 and the base is 20cm what is the height

Parker marks sixths on a number line. He writes 5/6 just before 1. What fraction does he write on the first mark to the right of 1?

What is the range of the following? (-1,4), (0,1), (1,2), (1,4) A.) (4,1,4) B.) (-1,0,1,1) C.) (-1,1,2,4) D.) (4,1,2) E.) (-1,0,1)

The link of a garden is 125 of It's with in the garden is 8 m what is the area of the garden.

Find the scale factor for the dilation. ba Bom a ...3333 b. 2/6 C. 1/3 d. All of the above

What what scientists do that is the basis for their investigation word that mean that

Ms. Morales has 5 bags of clay. There is of a pound of clay in each bag. In all, how many pounds of clay are in the bags?

A grain of sand weighs approximately 0.011 grams. There are approximately 7.5 x 10^18 grains of sand in the world. Using scientific notation, calculate approximately how much all the grains of sand in the world weigh (in grams).

the temperature is - 4°f. A high pressure front increases the temperature to 8°f. by how many degrees did the temperature increases?