Iwill mark brainliest the surface area of a sphere is 64π square inches. which equation can be used to solve for the radius of the sphere? 64π = 4πr 64π = 2πr3 64π = 2πr2 64π = 4πr2

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?