Solve the problem.During the first five months of the year, Len earned commissions of $3160, $2810, $3140, $2800, and $2380. If Len must have average monthly earnings of at least $2780 in order to qualify for retirement benefits, what must he earn in the sixth month in order to qualify for benefits?
A. at least $2390
B. at least $2858
C. at least $2780
D. at least $2845
Answer: A
Mathematics
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A. 625x8y8
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Use a double integral to find the volume of the solid shown in the figure.
?
?
__________ cu units.
Fill in the blank(s) with the appropriate word(s).
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In isosceles ?ACB, AC ? BC , in isosceles ?AFB, AF ? BF. Prove that ?EBC ? ?DAC.
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Find the indicated trigonometric function of ?.
Find sin B and tan B.
A. sin B = 
; tan B = 
B. sin B = 
; tan B = 
C. sin B = 
; tan B = 
D. sin B = 
; tan B = 
Mathematics