Find the sum of the given polynomials.

3x 2 + 2x - 5 and - 4 + 7x 2

1. - x2 + 9x - 9

2. 21x2 + 2x + 20

3. 10x2 - 5x - 1

4. 10x2 + 2x - 9

A wooden cube of oak has side length of 9 cm and a mass of 600 g. what is the density of the cube? round to the nearest hundredth.

The width of the rectangle is 5 inches. The length is twice As long as the width. What is the perimeter of the shape?

Seventy students are graduating in May. They make up 1/5 of the student population. How many students attend the school?

fritz drew an array with 5 rows of dots. he drew 15 dots altogether. how many dots are in each row of fitz's array? how do you know?

Rob cuts a 15 foot wire into 8 pieces. About how long is each piece

The difference of nineteen times a number and four

18.052 in expanded word form

What is three - 3 2/3

Jorge and Mary are both filling cups with fruit punch in preparation for a party. After 3 minutes, Jorge had 53 cups left to be filled, and after 5 minutes, he had 25 cups left to be filled. Mary's progress is shown in the table of values below.

Suppose the temperature at 6pm was 30 f. What would the temperature have been