Evaluate the expression 2a + 3b + 6 when a=2 and b=4

1. what is the phythaforean theorem? 2.what do we use it for? 1.what is the distance formula ? 2.what do we use it for?

72 the length of a side of a triangle is 36. a line parallel to that side divides the triangle into two parts of equal area. find the length of the segment determined by the points of intersection between the line and the other two sides of the triangle.

How much is $1200 worth at the end of1 year,if the interest rate is 5.5% is compounded quarterly.