Write a letter to a friend describing the similarities and differences between the three trigonometric ratios: Sine, Cosine, and Tangent. Include when they can be used and why they are helpful.​

The random variable x represents the number of phone calls an author receives in a day, and it has a poisson distribution with a mean of 8.7 calls. what are the possible values of x

3x + 4y = 5 x- 3y = -7 solve by substitution

Robin spent 25% more time on his research project than he had planned he’s been an extra h ours on the project which of the following expressions could represent the number of hours rob actually spent on the project