# MATHEMATICS

##### Question 16 of 20
0.0/ 5.0 Points
Find the magnitude and direction angle θ, to the nearest tenth of a degree, for the given vector v. v = -4i – 3j

A. 5; 233.1°
B. 7; 216.9°
C. 5; 216.9°
D. 5; 36.9°
##### Question 17 of 20
0.0/ 5.0 Points
Find the quotient of the complex numbers. Leave answer in polar form.

z1 =  z2 =  A.  B.  C.  D.  ##### Question 18 of 20
0.0/ 5.0 Points
Graph the polar equation.

r = 2 + 2sin θ

A. B. C. D. ##### Question 19 of 20
0.0/ 5.0 Points
Polar coordinates of a point are given. Find the rectangular coordinates of the point. (-5, -180°)

A. (-5, 0)
B. (0, -5)
C. (0, 5)
D. (5, 0)
##### Question 20 of 20
0.0/ 5.0 Points
Plot the complex number.

-5 – 5i

A. B. C. D. MATHEMATICS.

1. TABLE 11-3

A realtor wants to compare the average sales-to-appraisal ratios of residential properties sold in four neighborhoods (A, B, C, and D). Four properties are randomly selected from each neighborhood and the ratios recorded for each, as shown below.

A: 1.2, 1.1, 0.9, 0.4 C: 1.0, 1.5, 1.1, 1.3
B: 2.5, 2.1, 1.9, 1.6 D: 0.8, 1.3, 1.1, 0.7

Interpret the results of the analysis summarized in the following table: MA

Referring to Table 11-3, the among-group degrees of freedom is

[removed]A) 3.
[removed]B) 4.
[removed]C) 16.
[removed]D) 12.

2. TABLE 11-3

A realtor wants to compare the average sales-to-appraisal ratios of residential properties sold in four neighborhoods (A, B, C, and D). Four properties are randomly selected from each neighborhood and the ratios recorded for each, as shown below.

A: 1.2, 1.1, 0.9, 0.4 C: 1.0, 1.5, 1.1, 1.3
B: 2.5, 2.1, 1.9, 1.6 D: 0.8, 1.3, 1.1, 0.7

Interpret the results of the analysis summarized in the following table: Referring to Table 11-3, the within-group sum of squares is

[removed]A) 1.0606.
[removed]B) 4.3644.
[removed]C) 1.1825.
[removed]D) 3.1819.

3. A completely randomized design

[removed]A) has one factor and one block and multiple values.
[removed]B) can have more than one factor, each with several treatment groups.
[removed]C) has one factor and one block.
[removed]D) has only one factor with several treatment groups.

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