Khleo goes into a snack bar with exactly $20.00. She buys five bottles of water that cost $1.58 each and a pack of gum that costs $0.80. The snack bar prices include sales tax. After she pays and receives her change, Khloes friend andy gives her half the cost of the water bottles. How much money does she have now?​

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?

If 7x=9y, y/z = 7/5 , then x/z = (a) 2/7 (b) 7/9 (c) 9/5 (d) 9/7 (e) 5/9