Polonium-218 has a half-life of about 3 minutes.

After 15 minutes, how many milligrams of a 120 mg sample will remain?

A. 1.875 mg

B. 3.75 mg

C. 4.8 mg

D. 7.5 mg

Which of the following two layers of Earth are part of the lithosphere?

What is the acceleration of softball if it has a mass of 0.5 kg and hits the catcher glove with a force of 25n

Simplify 4/1/4 - 1/5

Solve and check -5*=-50

Is x=-7y + 34 and x+7y=32 one solution, infinitely many solutions or no solution

What did the Twenty-fourth Amendment to the Constitution change about voting? It gave the vote to 18-20-year old citizens. It gave the vote to women. It prohibited poll taxes. It gave the vote to freed slaves.

Jose invested $5000 into a fund with an interest rate of 4.8%. How much interest would he earn after 2 years? A) $240 B) $24,000 C) $480 D) $48,000

Six students from a statistics class reported the number of hours of television they watched per week. here are their dа ta: 8, 10, 5, 14, 3, 6. what is the mean number of hours of television watched per week for this sample of six students? a.

10. What's the area of the room in this diagram? 12 feet 13 feet

Mrs. Myles has 54 cookies to give to the 18 students in her class. Write a number sentence using the variable c to represent the number of cookies each student gets. A) 18 = 54c B) 54 * 18 = c C) 54 - 18 = c D) 54 : 18 = c