um i am very confused about how do u multiple decimals like this question 6000 x 0.15 here how do i get the answer 900.

Multiply −2x(6x^4−7x^2+x−5) express the answer in standard form. enter your answer in the box.

The length of each stair is 11 inches. what is the rise, r, for each stair? round to the nearest inch. 2 inches 7 inches 17 inches 24 inches

The perimeter of a triangle is 69 cm. the first is 5 cm shorter than the second side. the third side is twice as long the first side. find the length of each side