A sequence is defined recursively as follows:




Mathematics

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Solve the equation. If there are no real solutions, write "no real-number solutions."x2 = 25

A.
B. ±5
C. 5
D. no real-number solutions

Mathematics

Find the unit tangent vector T and the principal unit normal vector N. r(t) = (cosh t)i + (sinh t)j + tk 

A. T = (tanh t)i  + j  + (sech t)k; N = (sech t)i  - (tanh t)k 
B. T = -  (tanh t sech t)i  + j  + (sech t)k; N = (-sech t)i  - (tanh t)k 
C. T = (tanh t sech t)i  + j  + (sech t)k; N = (sech2 t)i  - (sinh t)k 
D. T = - (tanh t)i  + j  + (sech t)k; N = (-sech t)i  - (sinh t)k 

Mathematics

Identify the figure and name it using the labels shown.

A. ?CA
B. ray CA, or 
C. line CA, or 
D. line segment CA, or 

Mathematics

The bar graph below shows the recorded high temperatures in Little City for the indicated months. In which month was the recorded temperature closest to -5°C?

A. January B. December C. February D. March

Mathematics