Simplify the following expression is where s=-3 and r=-9 in the problem 4-3s-7r+2

If the diagonals of a quadrilateral bisect each other, then the quadrilateral is a parallelogram. ture false

Tom gave a 10 bill for a 3.49 book how much change should he get back

Cost to store: $65 Markup:25% Selling price:?

What is the area of a triangle whose vertices are R (-4,2) R ( - 4, 2), S (1,2) S (1, 2), and T (-5,-4)

suppose that the current canadian dollar to US dollar exchange rate is 0.80 CAD = $1 US and that the U. S. dollar price of an Apple iphone is $320 what is the Candian dollar price of iphone?

Tabitha's hiking distance in july was 2/5 miles she wrote the distance of 2.02 miles what error did she make?

Solve Y/5.6 = 12 for y

How to reduce 3/63 to its simplest form

Find the next three term sequence 2,8,32,128

Given that x and y are real numbers, find the value of x and y if (x+y) + (x-y) i=7+3i