Find the perimeter when 97 triangles are put together in the pattern shown below. assume that all triangles slides are 1 cm long the perimeter is how manny cm?

X+y=-4 x-y=2 use elimination with adding and subtraction

Given the expression (7 ? 4i) ? (2 + 6i), perform the indicated operation and write the answer in the form a + bi.

Margaret is purchasing a house for $210,000 with a 15 year fixed rate mortgage at 4.75% interest she has made a 5% down payment the house is valued at 205,000 and the local tax rate is 3.5% homeowners insurance 600 per year what are her total monthly payment