Write the expression in the standard form a + bi.(-4 - 7i)(2 + i)

A. -1 + 10i
B. -15 + 10i
C. -1 - 18i
D. -15 - 18i


Answer: C

Mathematics

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Find the first three terms of the Taylor series in x - a.ln x, a = 1

A. 1 + (x - 1) - (x - 1)2 + . . .
B. (x - 1) - (x - 1)2 + (x - 1)3 - . . .
C. 1 - (x - 1) + (x - 1)2 - . . .
D. (x - 1) - (x - 1)2 + (x - 1)3 - . . .

Mathematics

Determine whether or not the set is well defined.{x | x is a tennis player who has won at Wimbledon}

A. Well defined B. Not well defined

Mathematics

Provide an appropriate response.An empirical formula relating the surface area A (in square inches) of an average human body to the weight w (in pounds) and the height h (in inches) of the person is A(w, h) = 15.64w0.425h0.725. Find and .

What will be an ideal response?

Mathematics

Convert. When necessary, round the answer to two decimal places.50 quarts =    gallons

A. 12 
B. 25
C. 100
D. 48

Mathematics