What is 8.3 times 10 to the power of 4 in standard form

Use the elimination method to solve the system of equations -x+5y=-4 and 4x+3y=16

In a singing competition, there are 150 participants. at the end of each round, 40% of the participants are eliminated. how many participants are left after n rounds?

Full year - williamshow many square inches are in 60 square feet? 5 square inches72 square inches720 square inche8.640 square inches