C-14 has a half life if approximately 5700 years how many years will it take for the radioactivity of a sample to reach one-fourth of its original amount

A. 1425

B. 5700

C. 11400

D. 22800

How many diagonals can be drawn from a vertex of an octagon? 6 7 5 8

Evaluate - 4x-y+4 - 4x-y+4 when x = - 1 4 x=-14 and y=3

9. The formula s = V180 can be used to find the speeds of a car in miles per hour when the car needs d feet to come to a complete stop after stepping on the brakes.

You and your friend are making 30 liters of sodium water. You have liters of 10% sodium and your friend has liters of 22% sodium. How many of your liters and how many of your friends liters should you mix to make 30 liters of 15% sodium?

Which pair of numbers has the same Greatest Common Factor as 48 and 78? A) 4 and 34 B) 8 and 18 C) 9 and 15 D) 12 and 30

If you had 4 apples and 5 pencils how many pancakes can you fit on the roof A. purple bc aliens dont wear hats B. 69 C. 420 D. 12

How big is a teaspoon compared to a regular spoon?

Shella is making a scale model of a monument that is 215 feet tall. She uses a scale of 1 inch = 5 feet. How tall should Sella make her model?

X^2+y^2+3x=0 Find the x and y intercepts

Joan is building a sandbox in the shape of a regular pentagon. The perimeter of the pentagon is 35y4 - 65x3 inches. What is the length of one side of the sandbox? 5y - 9 inches 5y4 - 9x3 inches 7y - 13 inches 7y4 - 13x3 inches