Tom and Tina are working on a robot together. They can make the robot in 10 hours while working together. Todd works at half the rate Tina does (i. e. it takes Todd two times longer to make the robot than it does Tina)How long does it take Tina to make the robot by herself? How long does it take Todd to make the robot by himself ?

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?

Determine the domain and range of the given function. the domain is all real numbers all real numbers greater than or equal to –2{x: x = –2, –1, 0, 1, 2}{y: y = –2, –1, 0, 1, 2}. the range is all real numbers all real numbers greater than or equal to –2{x: x = –2, –1, 0, 1, 2}{y: y = –2, –1, 0, 1, 2}.

The ratio of the height of two similar cylinders is 4 to 3 what is the ratio of their volumes