The expression cos4xcos3x+sin4xsin3x is equivalent to?

A. sin x

B. sin7x

C. cos x

D. cos7x

Three rats in a lab are injected a type of medicine. The independent probabilities for each rat exhibiting side effects are 0.5, 0.4 and 0.3 respectively.

Which phrase describes the algebraic expression 3 x minus 4?

Pita has 12 coins in her bag there are three £1 coins and nine 50p coins she takes 3 coins from the bag at random work out the probability that she will take exactly £2.50

What is the rotational symmetry of a wheel

What is the value of 17.38-19.26+14.2

Which of the following expressions are equivalent to x + 2 - x? Choose all answers that apply: A. 0 + 2 B. 0 C. None of the above

What is the LCD of 1/6 and 3/10

If the probability of Stephan Curry missing a free throw is 6%, what are the odds of him hitting the next free throw?

3/5 of students at a school are boys. If there are 2420 students at the school, how many are girls?

Question 7 Unsaved A couch cost $825. If the state has a 10% sale's tax. What was the price of the couch before taxes? Question 7 options: $785 $750 $735 $700