There were 60 seventh-grade students
who signed up for soccer tryouts last
year. this year, 48 seventh-grade students
signed up for tryouts. what is the percent
decrease in the number of students from
last year to this year?

How to choose the sign of the radical in the denominator of the formula for the distance from a point to a line.

Apositive number a or the same number a increased by 50% and then decreased by 50% of the result?

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?