Multiply. Write the result in the form a + bi.(8 + 7i)(9 - 8i)
A. 16 + 127i
B. 128 - 1i
C. 128 + 1i
D. -56i2 - 1i + 72
Answer: B
Mathematics
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At the given point, find the line that is normal to the curve at the given point.y4 + x3 = y2 + 11x, normal at (0, 1)
A. y = 
x + 1
B. y = - 
x
C. y = 
x + 1
D. y = - 
x + 1
Mathematics
Decide where the first digit in the quotient would be located. Then without finishing the division, determine which of the three choices is the correct answer.
A. 4580 B. 458 C. 46
Mathematics
Refer to the figure. 
Write the bearings of the points H and I.
A. H: N 20° W I: N 62° W B. H: N 80° W I: N 62° W C. H: N 20° W I: N 28° W D. H: N 80° W I: N 28° W
Mathematics
Perform the row operation(s) on the given augmented matrix.R2 = -1r1 + r2 
A. 
B. 
C. 
D. 
Mathematics