Find the LCD for the given fractions.
, 
, and 
A. 30
B. 12
C. 60
D. 20
Answer: C
Mathematics
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Estimate the magnitude of the error involved in using the sum of the first four terms to approximate the sum of the entire series.
A. 1.68 × 10-1 B. 1.96 × 10-2 C. 6.00 × 10-2 D. 3.36 × 10-2
Mathematics
If A denotes the area of the sector of a circle of radius r formed by the central angle ?, find the missing quantity. If necessary, round the answer to two decimal places.? = 
radians, A = 84 square meters, r = ?
A. 32.97 m B. 131.88 m C. 14.63 m D. 5.74 m
Mathematics
Round the whole number to the given place.11,996 to the nearest ten
A. 11,000 B. 11,900 C. 12,000 D. 11,990
Mathematics
Solve the system of equations by the substitution method. Check your solutions.
A. {(8, -5)} B. {(-8, 5)} C. {(-8, -5)} D. {(8, 5)}
Mathematics