In group of 100 what is the expected number of pairs of peole who have the same birthday

If chord ab is congruent to chord cd, then what must be true about ef and eg?

Astore is having a sale in which all items are reduced by 20 percent. including tax, jennifer paid $21 for a pair of shorts. if the sales tax is 5 percent, what was the original price of the shorts

Find the measure of anglec in the following triangle