Multiply. Write the result in the form a + bi.( 3 + 
i )( 3 - 
i )
A. 9 + 5i
B. 4
C. 34
D. 14
Answer: D
Mathematics
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If 
, find a formula for 
.
?
A. 
B. 
C. 
D. 
Mathematics
Evaluate the expression.
A. 362,880 B. 40,320 C. 336 D. 5040
Mathematics
Find decimal notation.- 
A. -0.625
B. -0.125
C. -0.
D. -1.25
Mathematics
Solve.Two forces of 680 and 220 N (newtons) act on an object. The angle between the forces is 45°. Find the magnitude of the resultant and the angle that it makes with the smaller force.
A. 851 N, 11° B. 850 N, 34° C. 7 N, 11° D. 849 N, 16°
Mathematics