What is 121.66=2.15h +72.21
A 1.7
B 23
C 17
D none of these

Choose the more precise measurement. 26.4 cm or 8.39 cm

The ph level of a blueberry is 3.1 what is the hydrogen-ion concentration [h+] for the blueberry

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?