Find the standard form of the equation of the hyperbola with the given characteristics and center at the origin.
?
Vertices: 
; foci: 
?
A. 
B. 
C. 
D. 
E. 
Answer: C
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Simplify.
A. 256a
B. 4a
C. 4
D. 4a2
Solve the problem.How much pure acid should be mixed with 6 gallons of a 50% acid solution in order to get an 80% acid solution?
A. 15 gal B. 24 gal C. 9 gal D. 3 gal
Jim has a 5-year-old car in reasonably good condition. He wants to take out a $40,000 term (that is, accident benefit) car insurance policy until the car is 10 years old. Assume that the probability of a car having an accident in the year in which it is x years old is as follows: x = age5 6 7 8 9 P(accident)0.01182 0.01282 0.01386 0.01513 0.01602 Jim is applying to a car insurance company for his car insurance policy. If the car insurance company charges $5000 for the policy and the expected total loss is $2786, how much profit does the company expect to make? Round your answer to the nearest dollar.
A. $2214 B. $2217 C. $2212 D. $2209 E. $2215
Solve the equation. State whether the equation is a contradiction, an identity, or a conditional equation.6(x + 4) = (6x + 24)
A. ? or { }; contradiction B. {0}; conditional equation C. {48}; conditional equation D. all real numbers; identity