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Justin has 750 more than eva and eva has 12 less than justin together they have a total of 63 how much money did

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?

Lines a and b are perpendicular. if the slope of line a is 3, what is the slope of line b?