Why would knowing the Pythagorean identity sin2x + cos2x = 1 and the sum identities allow you to prove all the other identities?

A rectangle has dimensions 7 ft x 12 ft. Which of the dimensions describe a rectangle that is similar to this rectangle? A.) 5 ft x 7 ft B.) 14 ft x 36 ft C.) 21 ft x 36 ft D.) 21 ft x 48 ft

Suppose x+y=11 and the value of x increases by2 2. if their sum remains the same, what mjst happen to the value of y? justify your response.

1. 3x + x-2x+7=x+15 2. 2 (2x) + 10=3x+13

In a recent survey, 88% of shoppers at a grocery store said they would be interested in a rewards program. If there were 450 shoppers surveyed, which proportion can be used to find the number who are interested in a rewards program?

Find the second derivative of f (x) = sec (pix)

Sue wakes up at 7:45 A. M. and jogs for 40 minutes. She then spends 45 minutes dressing for school before she catches the bus. At what time does Sue get on the bus?

Which equation is equivalent to 4x+3 = 64?

How would you write the equation with a slope of 2/3 and a y-intercept if - 3

On Saturday, a local hamburger shop sold a combined total of 520 hamburgers and cheeseburgers. The number of cheeseburgers sold was three times the number of hamburgers sold. How many hamburgers were sold on Saturday

A bag contains 10 red marbles, 15 yellow marbles and 5 green marbles. What is the probability of drawing a red or green marble from the bag?