Simplify the following expression into the form a+bi where a and b are rational numbers

(3+7i) (-2-2i) - 4i (5-9i)

Abcd is a rectangle with b (-5, 0), c (7, 0) and d (7, 3). find the coordinatesof a.

What is 85cm added to 1m 80cm?

Mark wanted an allowance. His father gave him a choice of getting it on a weekly or on a daily basis. He said he would either pay him $7.50 a week or pay him in the following manner for a week: On Monday he would give him $0.06; on Tuesday $0.

What is the product of d - 9 and 2d2 + 11d - 4? A=2d3 - 7d2 - 103d + 36 B=2d3 - 7d2 - 95d + 36 C=2d3 + 7d2 - 95d + 36 D=2d3 + 7d2 - 103d + 36

Ilke is deciding whether to take his girlfriend on a dinner date or on a movie date. The probability of his having a successful dinner date is 55%. The probability of his having a successful movie date is 0.45.

Over which interval are the exponential and linear function approximately the same? from 0.25 to 0.5 from 0.5 to 0.75 from 0.75 to 1.0 from 1.25 to 1.5

X2 + 20x + 99 Factor the expression

A scale drawing of a rectangular park measures 7.5 inches long and 4 inches wide. if the scale used for the drawing is 2.5 inches equals 15 yards, what is the actual length of the park?

Suppose that in a certain sinkhole the ground dropped 69.6 ft in 24 hr. Find the unit rate representing the change in altitude per hour ... the unit rate representing the change in altitude is how many feet per hour

Mindy had 1/2 of a can of soda left. If she shared it equally with her sister, how much of the can of soda did they each have? Choose the model that represents the answer. A. 1/4 B. 1/2 C. 2/2 D. 1/6