Verify

cos^4x-sin^4x=cos2x

I am giving out brainliest to the right answerer! Suppose you have a bag if 40 marbles and 20 of them are white. If you choose a marble without looking, the probability that you choose a white marble is 20/40. Describe the probability.

How many, and what type of solutions does 2x^2 + 11x + 15 = 0 have? a.) 2 irrational solutions b.) 2 nonreal solutions c.) 1 rational solutions d.) 2 rational solutions

Round 1964.15569 to the nearest hundredth, tenth, one, ten, and hundred.

Which one of the following statements expresses a true proportion? A. 2 : 3 = 3 : 2 B. 42 : 7 = 6 : 2 C. 14 : 6 = 28 : 18 D. 3 : 5 = 12 : 20

Nancy, Marcus, and Ken shared $364 among themselves. Marcus received 4 times as much as Ken. Nancy received twice as much money as Marcus. How much money did Marcus receive?

A pizza is cut into six unequal slices (each cut starts at the center). The largest slice measures $90$ degrees: [asy] unitsize (0.

What is the probability of spinning green on the first spinner and blue on the second spinner?

413:15 rezolvare completa cu rest

According to the U. S. Geological Survey, the Mississippi River is 200 mi shorter than the Missouri River. Together, they cover a total of 4880 mi. Find the lengths of each river.

In a famous story, a wise man in India requests a reward promised by his king. The wise man shows the king a chessboard having 64 squares.