Use the discriminant to determine the number and type of solutions for the equation. If the solution(s) are real, state whether they are rational or irrational.2 + 4z2 = 2z
A. Two nonreal complex solutions
B. Two rational solutions
C. One rational solution
D. Two irrational solutions
Answer: A
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Provide an appropriate response.Traditionally in hypothesis testing the null hypothesis represents the "status quo" which will be overturned only if there is evidence against it. Which of the statements below might represent a null hypothesis?
A. The mean temperature this decade is higher than the mean temperature over the past century. B. The defendant is guilty. C. The treatment has no effect. D. The teaching method raises SAT scores.
Convert to logarithmic form.
-3 = 
A. log-3
= 
B. log3
= 
C. log8/3
= -3
D. 
= 
Use a calculator to evaluate the expression. Round your answer to three decimal places
A. 1.374 B. -2.056 C. 0.687 D. 0.722
Solve the problem.A picture costs $790. The sales tax is $51.35. What is the sales tax rate?
A. 0.65% B. 6.5% C. 8.5% D. 7.5%