A certain radioactive substance has a half-life

of 2,000 years. How much of the radioactive

substance would remain after 8,000 years if

an initial sample had 40.0 grams of the

substance?

If x+y=375 and 1.25x+0.75y = 393.75 then what is y

Explain how to find the length of each side of a triangle with sides of equal length, and a perimeter of 27 inches

What is the 46th term in the arithmetic sequence? 7,11.5,16,20.5,25, ...

Jamie has a bank account of $412 and is saving $18 each week. George has a bank account with a balance of $874 and is spending $44 dollars each week. When will the two have the same amount of money?

Mary had a 3-inch piece of ribbon. She cut it in half. How long were the new pieces?

Find the value of |-8| + 4 (-5 + 9) : 2. 16 12 24 0

Select the best definitions of population and sample. A sample is the group from whom information is being collected. A population is the larger group the sample represents. A population is a number that describes an entire group.

A triangular pyramid has three dimensions. -The sides of the base are 5 centimeters, 12 centimeters, and 13 centimeters. -The height is 12 centimeters What is the volume of the pyramid? A) 120 cm^3 B) 360 cm^3 C) 240 cm^3 D) 720 cm^3

Archy bought 15 gallons of gas for $23.85. Joe bought 16 gallons of gas for $24.48. who paid less per gallon?

there is 7 out of 11 people brought an umbrella to the beach. There were 99 people there. How many of them did NOT have a beach umbrella?