Simplify the expression by using a double-angle formula.

cos-39° - sin²39

The circumference of a circle with a radius of 1 is 2π. Set up a proportion to find the circumference of a circle with a radius of 6.

How do you write 0.02 as a percent

What is the vertex of the graph of the function below? у = k - 4 х + 3 ОА. (2, 0) Ов. (2, - 1) Ос. (1,-1) OD. (1, 0)

If 4/5xblank=2/5 what is blank?

Which of the following statements is correct? a. Population parameters are used to make inferences about sample statistics b. Population statistics are used to make inferences about sample parameters c.

You are saving for a skateboard that costs $125. Your aunt gives you $45 to start and you save $3 each week. The expression 45 + 3w gives the amount of money you save after (w) weeks. a.

For a party, you can spend no more than $20 on cakes. Egg cake costs $4 and cream cake costs $2. Write the linear inequality that models the situation.

The revenue of 200 companies is plotted and found to follow a bell curve. The mean is $815.425 million with a standard deviation of $22.148 million. Would it be unusual for a randomly selected company to have a revenue between $747.89 and 818.

Three of the squirrels each got 4 nuts. Five of the squirrels each got 5 nuts. How many nutsdo they have in all

If h = 21 units and r = 7 units, what is the volume of the cone shown above? Use 3.14 for.