a certain medication has a half-life of 2 hours. if you take 500 mg of the medication, how much will be left in your system after 12 hours

Beth records the height of a plant for 8 weeks and creates a scatter plot of the data. What is the equation of the line of best fit? What will the plant's height be in 20 weeks?

Law of Sines: sin (A) / a = sin (B) / b = sin (C) / c Triangle ABC has measures a = 2, b = 2, and m∠A = 30°. What is the measure of angle B? A. 15° B. 30° C. 45° D. 60°

An open box is constructed of 3500 cm2 of cardboard. The box is a cuboid, with height hcm and square base of side xcm. What is the value of x which maximises the volume of the box?

A jet airliner flies 4,100 km from New York City to San Francisco in 4.25 h. What is its average speed?

6x=3 simplify your answer as much as possible.

The height of a cylinder is twice the radius of its base What expression represents the volume of the cylinder, in cubic units? O 4nx2 O 2nx3 O nx2+2x O 2+nx3

What is 5 (2x+1) = 4-2 (4x-5)

The sum of two numbers is 16, and there difference is 8. determine the numbers by solving the following systems of equations, using x and y to represent the unknown numbers. x+y = 16 x_y=8

A study will be conducted to investigate whether there is a difference in the mean weights between two populations of raccoons.

104/99 as mixed number