△abc is a right triangle with right angle at ∠b .

ab=42 cm
bc=34 cm

what is the measure of ∠a , to the nearest degree?
enter your answer in the box.

If you are dealt 4 cards from a shuffled deck of 52? cards, find the probability that all 4 cards are diamondsdiamonds.

Joe has some money in his bank account he deposits 45$ write an expression that represents the amount of money in joe's account

James wants to promote his band on the internet. site a offers website hosting for $4.95 per month with a $49.95 startup fee. site b offers website hosting for $9.95 per month with no startup fee. for how many months would james need to keep the website for site a to be a better choice than site b?