Kelly spent $45 more on boots than she did on pair of jeans. she spent $79.50 on the boots. how much did she spend on the jeans?

The length of a rectangle plus its width is 25 cm. the area is 156 square cm. what are the length and width of the rectangle? separate the answers with a comma.

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?

Def rotates 90 clockwise about point a to create d’ e’ f’. therefore, which equation must be true ?