Factor the greatest common factor.

-30k^6 + 9k^5 - 21k^4

the ratio of roses to lilies in a flower arrangement is 3 to 5. how many roses would there be if there were 24 total flowers in the arrangement?

Convert 0.2% to a decimal.

Jamie baked 24 biscuits. Her sister Mia ate 3 biscuits, and her brother David ate 2 biscuits. Which expression can Jamie use to find how many biscuits are left?

Desmond buys in-line skates for $312.43, including sales tax of 15%. Let x = the price of in-line skates before tax. Write an algebraic expression in x for "the tax paid on the in-line skates.

Hirva ate 5/8 of a medium pizza Elizabeth ate 1/4 of the pizza how much pizza did they eat all together?

If a+b=12 and a-b = 8, what is the value of a^2+b^2?

In which quadrant is (1/2, - 1.8) ?

Is 3/5 terminating number

Solve for x of the triangle x^2=4x9

Solve the following equation for m - 2m+7=11