Find the mean for the group of data items. Round to the nearest hundredth, if necessary.22, 22, 58, 76, 69, 22
A. 49.4
B. 44.83
C. 41.17
D. 53.8
Answer: B
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Use the sum-of-the-years'-digits method of depreciation. Round to the nearest dollar.Scot Cleaners bought a new trouser press for $7,500 and estimates its life at 4 years at which time the salvage value is expected to be $750. Find the amount of depreciation each year.
A. $3,000, $2,250, $1,500, $750 B. $1,688, $1,688, $1,688, $1,688 C. $3,750, $1,875, $938, $188 D. $2,700, $2,025, $1,350, $675
Write the standard form of the equation of the circle whose radius is r and whose center is (h, k).r = 10; (h, k) = (1, 3)
A. (x - 3)2 + (y - 1)2 = 10 B. (x + 3)2 + (y + 1)2 = 10 C. (x + 1)2 + (y + 3)2 = 100 D. (x - 1)2 + (y - 3)2 = 100
Simplify. Write your answers in the form of a+bi, where a and b are real numbers.
+ 
A. - 
+ 
i
B. - 
- 
i
C. 
- 
i
D. 
+ 
i
Multiply the polynomials using the FOIL method. Express the answer as a single polynomial in standard form.(-5x - 11)(-3x + 3)
A. 15x2 + 18x + 18 B. -8x2 + 18x + 18 C. 15x2 + 18x - 33 D. -8x2 + 18x - 33