Give the degree measure of ?.? = cot-1 
A. 90°
B. 45°
C. 135°
D. 180°
Answer: C
Mathematics
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Use the quadratic formula to solve the equation. Give both exact and approximate answers.4m2 + 10m + 1 = 0
A. 
; -0.052, -1.198
B. 
; -1.354, -3.646
C. 
; -0.104, -2.396
D. 
; 0.096, -2.596
Mathematics
Use a graphing utility to find the inverse, if it exists, of the matrix. Round answers to two decimal places.
A. 
B. 
C. 
D. 
Mathematics
Solve.By switching service providers, a family's telephone bill decreased from about $50 a month to about $43. What was the percent of decrease?
A. 14%
B. 16.3%
C.
| 7% |
D. 15%
Mathematics
Solve the problem.A painter can finish painting a house in 4 hours. Her assistant takes 6 hours to finish the same job. How long would it take for them to complete the job if they were working together?
A. 3 hr
B. 
hr
C. 5 hr
D. 2
hr
Mathematics