Simplify the expression:
a. 50
b. 25
c. 10
d. 16
b. 25
Mathematics
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Find a formula for the nth term of the sequence.1, - 
, 
, - 
, 
(reciprocals of squares with alternating signs)
A. an = 
B. an = 
C. an = 
D. an = 
Mathematics
Let 
. If y is increased by 32%, how is x affected? Express your answer in terms of a percent. Round your answer to two decimal places if necessary.
?
A. x is decreased by 10.91% B. x is increased by 10.91% C. x is decreased by 8.67% D. ?x is increased by 8.67%
Mathematics
Answer the question.In one year, an automobile factory manufactured 54,360 vans and 37,340 pickup trucks. In the following year, the output was 81,540 vans and 56,010 pickup trucks. Was the ratio of vans to pickup trucks the same in both years?
A. Yes B. No
Mathematics
Evaluate.-44
A. -8 B. -256 C. 1024 D. 256
Mathematics