AnswersTX-Pre-CalculusUnit Test

Unit Test — Cumulative exam Answers

25 verified answers4 views
1
Free Preview

Find a vector that has the same direction as but that has a different magnitude.a.c.b.d.

Question illustration
A
A
B
B
C
C
D
D
2
Free Preview

Write the ordered pair that represents . Then find the magnitude of .

Question illustration
A
; units
B
; units
C
; units
D
; units
3

Which of the diagrams correctly displays , using the triangle method? a. c. b. d. Please select the best answer from the choices provided

Question illustration
A
A
B
B
C
C
D
D
4

Which is the equation of a parabola with Vertex (0, 0) and focus (-3, 0)?a.c.b.d.

Question illustration
A
A
B
B
C
C
D
D
5

Determine the magnitude and the ordered pair that represents the vector from (18,3) to (-4,16).

A
(22,-13); magnitude=25
B
(-22,13); magnitude=25.6
C
(13,-22) magnitude=26
D
(-13,22) magnitude=25.2
6

Determine the principal value of the function:a.c.b.d.

Question illustration
A
A
B
B
C
C
D
D
7

Find the exact value of .a.c.b.d.

Question illustration
A
A
B
B
C
C
D
D
8

Explain why f(x) = is not continuous at x = 2.

Question illustration
A
f is not defined at x = 2
B
f is not defined at x = 1
C
f is not defined at x = -2
D
f is not defined at x = 0
9

Write the equation of a parabola with vertex at (0,0) and directrix of y=-3.a.c.b.d.

Question illustration
A
A
B
B
C
C
D
D
10

Determine which equation is belongs to the graph of the limacon curve below.[-5,5] by [-5,5]

Question illustration
A
r = 1 - 3 sin
B
r = 2 + 2 sin
C
r = 3 - 2 sin
D
r = 2 - 2 sin
11

Write parametric equations of the line .a.c.b.d.

Question illustration
A
A
B
B
C
C
D
D
12

Perform the following calculation: a.c.-333b.-87d.

Question illustration
A
A
B
B
C
C
D
D
13

Write the parametric equation of the line: a.c.b.d.

Question illustration
A
A
B
B
C
C
D
D
14

Find a b if a = 10i + 4j and b = 3i + 4j.a.c.46b.-14d.

Question illustration
A
A
B
B
C
C
D
D
15

Explain why f(x) = is continuous at x = 2.

Question illustration
A
f is defined at x = 3
B
f is not defined at x = 2
C
f is defined at x = -3
D
f is defined at x = 2
16

Determine two pairs of polar coordinates for (-3,0) when .

Question illustration
A
(3,180°), (-3,0°)
B
(3,270°), (-3,90°)
C
(3,0°), (-3,180°)
D
(3,90°), (-3,270°)
17

Convert the rectangular coordinates (11,-4) to polar coordinates.

A
(11.7, -20)
B
(11.7, 70)
C
(10.2, -20)
D
(10.2, 70)
18

Find the value of .a.0 c.2b.d.

Question illustration
A
A
B
B
C
C
D
D
19

Graph the polar equation and determine about which axis it is symmetric.

Question illustration
A
Symmetric about the x-axis
B
Symmetric about the y-axis
C
Symmetric about the y-axis
D
Symmetric about the x-axis
20

A customer deposits $1,000 in an account in which the interest is compounded annually. The table below shows the balances in the account at the end of each year.Amount in Account vs. Number of YearsAmount in Account, ANumber of Years After Initial Deposit, t1,00001,08011,166.4021,259.7131,360.494Which equation best represents the data in the table?

A
A = 1000 (1.08) Superscript t
Option A
B
A = 1080 Superscript t
Option B
C
A = 1000 (1.8) Superscript t
Option C
D
A = 800 Superscript t
Option D

Did you find these answers helpful?

More from this Course

RC
22 verified answers

Cumulative Exam

Quiz
25 verified answers

Unit Test

Assignment
22 verified answers

Law of Sines