Find the radian measure of angle ?, if ? is a central angle in a circle of radius r, and ? cuts off an arc of length s.
?
cm, 
cm
?
A. 
B. 4
C. 
D. 
E. 5
Answer: E
Mathematics
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Perform the indicated operation without the use of a calculator and express each answer in scientific notation.
A. 4 × 10-1 B. 4 × 101 C. 4 × 1015 D. 4 × 10-15
Mathematics
Solve the problem.If u = -7i - 2j and v = 5i + 7j, find u - v.
A. -13i + 5j B. -14i + 5j C. -2i + 5j D. -12i - 9j
Mathematics
Find any missing lengths in the similar shapes.
A. x = 24 B. x = 32 C. x = 40 D. x = 30
Mathematics
Find a ? b.a = 7i - 9j, b = 3i + 5j
A. 
B. -66
C. 
D. -24
Mathematics