Referring to triangle ABC, find the area of the triangle.
?
a = 4.9 yd, b = 6.5 yd, c = 7.8 yd
?
Round to three significant digits.
?
S = __________ yd2
Fill in the blank(s) with the appropriate word(s).
15.9
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Find the sum of the infinite geometric series, if possible. If it is not possible, explain why. If necessary, round to three decimal places.6 + 3 + 
+ . . .
A. 2
B. 4
C. 12
D. The sum does not exist because 
? 1.
Find the median of the random variable x with the probability density function defined on the indicated interval I. The median of x is defined to be the number m such that 
. Observe that half of the x-values lie below m and the other half lie above m.
?
?
__________
Fill in the blank(s) with the appropriate word(s).
Find the missing factor.x2 + 6x + 8 = (x + 4)( )
A. x2 + 2 B. x + 4 C. x + 2 D. x - 10
Perform the indicated operations and simplify the result so there are no quotients to complete the identity.csc ?(sin ? + cos ?) = ?
A. sin ? tan ? B. 1 + cot ? C. -2 tan2? D. sec ? csc ?