Cumulative Exam — Cumulative exam

Question 1

Which expression is equivalent to (4 + 7i)(3 + 4i)?

Revolt · Accepted Answer

–16 + 37i

Question 2

Which of the following matrices does not have an inverse?

Revolt · Accepted Answer

mc009-1.jpg

Question 3

Alice’s backyard is a rectangular piece of property that is twice as long as it is wide. The total area of her yard is 1,000 m2. What is the approximate width of her backyard?A = lw

Revolt · Accepted Answer

22.4 m

Question 4

What is the solution to the equation ?

Revolt · Accepted Answer

x = 3

Question 5

What is the quotient of ? Assume a3 and a–3.

Revolt · Accepted Answer

Answer image: //media.edgenuity.com/evresources/7e604dbc0a62e3a839d2d729dc9ad620.png

Question 6

Matrices C and D are shown below. What values of a and b will make the equation CD = I true?

Revolt · Accepted Answer

mc019-3.jpg

Question 7

The graph below shows the function .Which statement is true?

Revolt · Accepted Answer

There is a hole at x = 3 and an asymptote at x = –1.

Question 8

If a polynomial function f(x) has roots and –6, what must be a factor of f(x)?

Revolt · Accepted Answer

(x – ())

Question 9

What is the following sum?

Revolt · Accepted Answer

4 x (RootIndex 3 StartRoot 2 y EndRoot) + 12 x squared y (RootIndex 3 StartRoot 2 y squared EndRoot)

Question 10

The polynomial equation has complex roots . What is the other root? Use a graphing calculator and a system of equations.

Revolt · Accepted Answer

–1

Cumulative Exam — Cumulative exam Answers

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