Determine the sum of the series .

A. 3
B.
C.
D. 12


Answer: D

Mathematics

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Solve. Express the answer in scientific notation to two decimals unless requested otherwise.A computer can do one calculation in 1.4 × 10-7 seconds. How long would it take the computer to do a trillion (1012) calculations? Round to one decimal place.

A. 1.4 × 10-7 sec B. 1.4 × 105 sec C. 1.4 × 1012 sec D. 1.4 × 106 sec

Mathematics

Find the slope and the y-intercept of the line.-5x + 2y = 1

A. Slope ; y-intercept (0, -)
B. Slope ; y-intercept (0, )
C. Slope 5; y-intercept (0, -1)
D. Slope ; y-intercept (0, )

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Use algebra to find the value of x in the triangle, when . ? ? __________°

Fill in the blank(s) with the appropriate word(s).

Mathematics

Convert the units using unit fractions.144 hr =  days

A. 6  B. 42 C. 72  D. 48 

Mathematics