Solve with a bar model: marie and niels are selling candy bars to raise money for their science fair. originally, the ratio of candy bars that marie has to sell to the candy bars that niels has to sell is 5: 4. after they each sell the same amount of candy bars, marie notices that she has twice as many left as niels. if they have a combined total of 18 candy bars left to sell, how many did each have to start with?

With these: 18/36 = 1/? missing number change 1 5/8 to improper fraction. change 19/5 to a mixed number.

Which equation represents the line that passes through the points and (4, 10) and (2, 7)? y = 3/2x - 11y = 3/2x +4y = - 3/2x + 19y = - 3/2x + 16

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?