What fraction of a given sample of radioactive nuclide remains after four half lives?

A. half-life: 1/2 left

B. half of that, or 1/4

C. half of that, or 1/8

D. half of that, or 1/16

A line with a negative slope is perpendicular to one of the lines shown. What's the slope?

Clyde is baking, and the recipe requires 1 1/3 of flour but he is doubling the recipe to make twice as much. How much more flour does Clyde need?

What is 4/6+1/3 can y'all tell me this is for homework and I can't seem too figure it out

The equation A=p (1+r) ^t can be used to calculate compound interest on a savings account. A = future balance, p = current balance, r = rate of interest, and t = time in years.

An integer between 8.1 and 9.1

Complete the square for 5x^2-30x=5

Uber he crater in Death Valley has a diameter of a little more than 1/2 Mile. If Leticia walks around its Rim at a rate of 2 miles per hour, about how long will it take her to walk all the way around the crater?

Do natural numbers have multiplicative inverse

The radius of a circular Frisbee is 9.8 centimeters. Using rounding to the nearest whole number, what is an estimate for the circumference of this circle? A. 50 cm B. 60 cm C. 65 cm D. 72 cm

A car travels 17 miles on one gallon of gas. Express y in terms of x if the car uses y gallons to travel x miles