On a circle graph how many degrees must be in a sector to show 50%

Use the elimination method to find the solution to the system of equations. 2x - 3y = -9 -x + 3y = 6

Tanya has $42 to spend at the dolphin island store. tshirts sell for $7 each and a pair of sunglases sells for $6.tanya buys 3 tshirts. how many pairs of sunglases can she buys with the amount of money she has left

Acone with volume 1350 m³ is dilated by a scale factor of 1/3. what is the volume of the resulting cone? enter your answer in the box. m³