Divide and simplify.
A. 20x4
B. 3x4
C. 3x3
D. 3x8
Answer: B
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Express the exercise as a system of linear equations, then find the solution. Use a calculator where appropriate.Chandra has 2 liters of a 49% solution of sodium hydroxide in a container. What is the amount and concentration of sodium hydroxide solution she must add to this in order to end up with 7 liters of 59% solution?
A. 5 liters of 63% solution B. 5 liters of 66% solution C. 5 liters of 61% solution D. 5 liters of 64% solution
Solve the problem.From a distance of 43 feet from the base of a building, the angle of elevation to the top of the building is 61°. Estimate the height of the building to the nearest foot.
A. 78 ft B. 38 ft C. 24 ft D. 21 ft
The expression is equal to either 0, 1, or -1. Decide which is correct.(-5)0
A. 0 B. -1 C. 1
Use the rational zero theorem, Descartes's rule of signs, and the theorem on bounds as aids in finding all real and imaginary roots to the equation.6x3 + 19x2 + 8x - 5 = 0
A. - 
, - 
, 
B. - 1, - 
, 
C. 
, multiplicity 2; - 
D. - 1, 
, 