QuickHelper

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About QuickHelper

Levels Tought:
Elementary,High School,College,University,PHD

Expertise:
Accounting,Applied Sciences See all
Accounting,Applied Sciences,Business & Finance,Chemistry,Engineering,Health & Medical Hide all
Teaching Since: May 2017
Last Sign in: 352 Weeks Ago, 5 Days Ago
Questions Answered: 20103
Tutorials Posted: 20155

Education

  • MBA, PHD
    Phoniex
    Jul-2007 - Jun-2012

Experience

  • Corportae Manager
    ChevronTexaco Corporation
    Feb-2009 - Nov-2016

Category > Engineering Posted 29 Aug 2017 My Price 15.00

i need help to answer q in precalculus

QUESTION 1 (4 POINTS)

Question 1 Unsaved

Solve the system of equations by substitution.


Question 1 options:
A) x = -1, y = 8; (-1, 8)

 

B) x = 1, y = 16; (1, 16)

 

C) x = -1, y = -8; (-1, -8)

 

D) x = 1, y = -8; (1, -8)

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QUESTION 2 (4 POINTS)

Question 2 Unsaved

Solve the system of equations by elimination.


Question 2 options:
A) x = 18, y = -5; (18, -5)

 

B) x = -18, y = 5; ( -18, 5)

 

C) x = -18, y = 6; (-18, 6)

 

D) x = -5, y = 18; (-5, 18)

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QUESTION 3 (4 POINTS)

Question 3 Unsaved

Solve the system of equations by substitution.


Question 3 options:
A) x = 7, y = 12; (7, 12)

 

B) x = -2, y = 3; (-2, 3)

 

C) x = 3, y = 7; (3, 7)

 

D) x = 12, y = -2; (12, -2)

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QUESTION 4 (4 POINTS)

Question 4 Unsaved

Solve the system of equations. If the system has no solution, say that it is inconsistent.


Question 4 options:
A) x = 4, y = 2; (4, 2)

 

B) x = 2, y = 3; (2, 3)

 

C) x = 2, y = 4; (2, 4)

 

D) inconsistent

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QUESTION 5 (4 POINTS)

Question 5 Unsaved

Verify that the values of the variables listed are solutions of the system of equations.




x = -3, y = 4

Question 5 options:
A) solution

 

B) not a solution

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QUESTION 6 (4 POINTS)

Question 6 Unsaved

Find the value of the determinant.

Question 6 options:
A) -33

 

B) 75

 

C) -45

 

D) 33

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QUESTION 7 (4 POINTS)

Question 7 Unsaved

Solve the system of equations using substitution.


Question 7 options:
A) x = 4, y = -3; x = 3, y = -4
or (4, -3), (3, -4)

 

B) x = -4, y = -3; x = -3, y = -4
or (-4, -3), (-3, -4)

 

C) x = -4, y = 3; x = -3, y = 4
or (-4, 3), (-3, 4)

 

D) x = 4, y = 3; x = -3, y = -4
or (4, 3), (-3, -4)

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QUESTION 8 (4 POINTS)

Question 8 Unsaved

Graph the system of inequalities.

-2x + y < 4
-2x + y > 1

Question 8 options:
A)

 

B)

 

C) No solution

 

D)

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QUESTION 9 (4 POINTS)

Question 9 Unsaved

Solve the system of equations by elimination.


Question 9 options:
A) x = 0, y = 0; (0, 0)

 

B) x = 1, y = 1; (1, 1)

 

C) x = 0, y = 1; (0, 1)

 

D) x = 1, y = 0; (1, 0)

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QUESTION 10 (4 POINTS)

Question 10 Unsaved

Solve the system of equations by substitution.


Question 10 options:
A) x = 7, y = -7; (7, -7)

 

B) x = -7, y = 7; (-7, 7)

 

C) x = 6, y = -6; (6, -6)

 

D) x = -6, y = 6; (-6, 6)

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QUESTION 11 (4 POINTS)

Question 11 Unsaved

Graph the system of inequalities.

3x - y ≤ -9
x + 2y ≥ 6

Question 11 options:
A)

 

B)

 

C)

 

D)

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QUESTION 12 (4 POINTS)

Question 12 Unsaved

Find the value of the determinant.

Question 12 options:
A) 2

 

B) -2

 

C) 58

 

D) -11

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QUESTION 13 (4 POINTS)

Question 13 Unsaved

Verify that the values of the variables listed are solutions of the system of equations.




x = -1, y = 6

Question 13 options:
A) solution

 

B) not a solution

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QUESTION 14 (4 POINTS)

Question 14 Unsaved

Graph the system of inequalities.

y > -2
x ≥ 5

Question 14 options:
A)

 

B)

 

C)

 

D)

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QUESTION 15 (4 POINTS)

Question 15 Unsaved

Solve the system of equations by substitution.


Question 15 options:
A) x = 1, y = 0; (1, 0)

 

B) x = 0, y = 0; (0, 0)

 

C) x = 1, y = 1; (1, 1)

 

D) x = 0, y = 1; (0, 1)

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Answers

QuickHelper
(10)
Status NEW Posted 29 Aug 2017 04:08 PM My Price 15.00

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