List the numbers in the given set that belong to the indicated set.Given 
, list the numbers in this set that also belong to the set of Irrational numbers.
A. 
, 
B. 
C. 
, 
D. 
, 
, 0.68
Answer: B
Mathematics
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Solve.A cyclist bikes at a constant speed for 20 miles. He then returns home at the same speed but takes a different route. His return trip takes one hour longer and is 25 miles. Find his speed.
A. 5 mph B. 4 mph C. 7 mph D. 6 mph
Mathematics
Find the first term and the common ratio of the geometric sequence.an = 3
n
A. a1 = - 
, r = 
B. a1 = - 
, r = 
n
C. a1 = 
, r = 
D. a1 = 
, r = 3
Mathematics
Write the expression using exponents.x ? x ? x ? x ? x ? x ? x
A. 7 B. 7x C. x7 D. 7(x)
Mathematics
Find the foci of the ellipse.
+ 
= 1
A. (- 
, 3), (
, 3)
B. (-7, 3), (1, 3)
C. (-3, 3+ 
), (-3, 3 - 
)
D. (-3 + 
, 3), (-3 - 
, 3)
Mathematics