A right triangle has two equal sides. The hypotenuse is 10 cm. What is the perimeter of the triangle? I'LL GIVE BRAINLIEST I JUST RLLY NEED THIS LOL

Saline iv fluid bags cost $64.20 for 24, 1000 ml bags from one supplier. a new supplier sells 500 ml bags for $2 each. the hospital uses about 10,000, 1000 ml bags each month. nurses report that about half of the bags are more than half full when they are discarded. if you are going to use only one supplier, which size bag provides the best deal, and how much will you save each month? compare the cost of the new supplier to the current one.

Two cyclists 84 miles apart start riding toward each other at the same. one cycles 2 times as fast as the other. if they meet 4 hours later, what is the speed (in mi/h) of the faster cyclist?

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.