The line graph shows the recorded hourly temperatures in degrees Fahrenheit at an airport.
Estimate when the temperature was -5°F.
A. 10:30 a.m.
B. 10:15 a.m.
C. 10:45 a.m.
D. 10 a.m.
Answer: B
Mathematics
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Find the cardinal number of the set.Given:n(U)= 213n(A)= 72n(B)= 92n(A ? B)= 31n(A ? C)= 34n(A ? B ? C)= 16n(A' ? B ? C')= 45n(A' ? B' ? C')= 54Find n(C).
A. 44 B. 42 C. 26 D. 76
Mathematics
Find the foci of the ellipse.25x2 + 64y2 = 1600
A. (0, ±
)
B. (±8, 0)
C. (±
, 0)
D. (±5, 0)
Mathematics
Find all values that make the rational expression undefined. If the rational expression is defined for all real numbers, so state.
A. x = -7
B. x = -49
C. x = 0, x = - 
D. Defined for all real numbers
Mathematics
Write out the sum.
A. 
+ 
+ 
+ ... + 
B. 1 + 2 + 3 + ... + n
C. 5 + 40 + 135 + ... + 
D. 
Mathematics