Which relationship in the triangle must be true?

sin (B) = sin (A)

sin (B) = cos (90 - B)

cos (B) = sin (180 - B)

cos (B) = cos (A)

One wall on Zoe's bedroom is 5 feet wide and 8 feet tall. Zoe puts up a poster of her favorite athlete. the poster is 2 feet wide and 3 feet tall. How much of the wall is not covered by the poster

It takes Marty 1 1/4 hours to get ready for school. If 1/5 used to take shower and 1/3 is used to eat breakfast, how long does it take him to shower and eat breakfast?

Find f (5). f (x) = x2 + 2x A) 15 B) 20 C) 30 D) 35

What are numbers like 10 100 and 1000 called

An irrational number times an irrational # will be

Read the statement given below and choose which of the following arguments proves that the statement is false. If a decimal is non-terminating, then it is irrational. A. 0.25 is non-terminating but is not irrational B. 1.

Sales tax on an item is directly proportional to the cost of the item purchased if the tax on a $600 item is $36 what is the sales tax on a $950 item?

Andy has a collection of blue and green marbles. The number of blue marbles is three times the number of green marbles. If there are 66 blue marbles in his collection how many green marbles are there

One angle of a rhombus measures 102°, and the shorter diagonal is 4 inches long. Approximately how long is the side of the rhombus? (Hint: Diagonals of a rhombus bisect the angles.) 2 in. 3 in. 4 in. 5 in.

Y=1/x^2-4 i need to know how to get the answer