Your friend says that the volume of a sphere with radius r is four times the volume of a cone with radius r. When is this true? Justify your answer.

Find derivative of 2cosx+2cos2x

Parallel lines are coplanar. Always Sometimes Never Not enough information

A number cube was rolled as part of an experiment. The results are in the table below. The fraction is the experimental probability of rolling a 3. What is x? Number Frequency Experiment Results 1 2 3 4 6 5 4 7 5 3 6 5 000N

How can the radian measure of an angle determine the arc length on the unit circle?

Madi has $8.80 in pennies and nickels. If there are twice as many nickels as pennies, how many pennies and nickels does Madi have? 0.01p + 0.05n = 8.80; n=? P

What is 1027 + 1151 in military time? I'm getting 22:16 which is 10:16 pm. Is this correct?

The sum of the ages of a china plate and a glass plate is 16 years. Four years ago the china plate was three times the age of the glass plate Find the present age of each plate

Two kilograms of bronze costs £7.20. What is the cost of 300g of bronze?

Solve algebraically x-4y=-10 x+y=5

Which of these are measures of central tendency that can be found for this list of baseball players' home-run totals? Check all that apply. 25, 42, 19, 34, 25, 19, 6, 23, 20, 42, 21, 19, 30 A. Mean B. Range C. Standard deviation D. Median E. Mode