Solve the given equation. 2 cos² ? - cos? - 1 = 0
What will be an ideal response?
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Solve the problem.The ABC Nut Company produces two brands of nuts by combining peanuts and premium mixed nuts. They have 3263 units of peanuts and 2717 units of mixed nuts on hand, and they all must be used before the next shipment arrives. One batch of Economy mix uses 27 units of peanuts and 13 units of mixed nuts. One batch of Supreme uses 20 units of peanuts and 26 units of mixed nuts. If the profit on Economy is 
per batch and the profit on Supreme is 
per batch, what is the maximum profit?
A. $13,200 B. $62,070 C. $2990 D. $61,640
Solve the radical equation.
= 9
A. {81}
B. 
C. 
D. {9}
Find the value of the variable that satisfies the equation.5x + 1 = -8 - 3x
A. x = - 
B. x = - 
C. x = 
D. x = - 
If we model after-tax household income with a normal distribution, then the figures of a 1995 study imply the information in the following table. Assume that the distribution of incomes in each country is normal, and round all percentages to the nearest whole number. What percentage of U.S. households had an income of $50,000 or more? Express your answer to the nearest 1%. CountryU.S.CanadaSwitzerlandGermanySwedenMeanhouseholdincome$38,000$35,000$39,000$34,000$32,000Standarddeviation$21,000$17,000$16,000$14,000$11,000? __________% of households
Fill in the blank(s) with the appropriate word(s).