Find the sum of (5a^3 – 5a) and (a^2 + 2a + 14). (Simplify your answer completely.) ps. ive tried this a billion ways the answer is NOT 5a^5+10a^4+65a^3-10a^2-70a

Polygon mnopq is dilated by a scale factor of 0.8 with the origin as the center of dilation, resulting in the image m′n′o′p′q′. the coordinates of point m are (2, 4), and the coordinates of point n are (3, 5). the slope of is .

Don't know how to find x given these segment lengths

In the sixth grade 13 out of 20 students have a dog if there are 152 sixth grade students how many of them have a dog