PLS HELP ME ILL GIVE YOU BRAINLIEST OR ANYTHING . HelP me hUmans

What is sin 7x/4 ? i need on this urgent trig

Given: △acm, m∠c=90°, cp ⊥ am , ac: cm=3: 4, mp-ap=1. find am.

If you draw a card with a value of three or less from a standard deck of cards, i will pay you $43. if not, you pay me $11. (aces are considered the highest card in the deck.) step 1 of 2 : find the expected value of the proposition. round your answer to two decimal places. losses must be expressed as negative values.