Please help me with number 1 and pleaseee show me how to do it step by step. Feel free do do others i will give 100 points and u will be marked brailiest

If the measure of xyz is 81 what is the measure of yz

Ascientist has 50 grams of a radioactive element. the amount of radioactive element remaining after t days can be determined using the equation (1) after two days the scientist receives a second shipment of 50 grams of the same element. the equation used to represent the amount of shipment 2 remaining after t days is 10) - 50 which of the following is an equivalent form of the expression for the amount remaining in shipment 2? what’s the answer?

Suppose your sat score is 2040. a college with an average sat score for admintted students of which of these would most likely be your best option?