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Question 1 of 5: Solve each system:
$$5x_1 + 7x_2 - 3x_3 - x_4=-5$$ $$x_1 - 2x_2 + 4x_3 - 2x_4=29$$ $$9x_1 + 5x_2 - 3x_3 - 6x_4=19$$ $$3x_2 + x_3 - 7x_4=16$$
Next »
Select the Correct Answer Below: Correct! Cool Emoji Not Correct! Cool Emoji
A
No Solution
B
$$(3, -1, 5, -2)$$
C
$$(2, -7, 0, 15)$$
D
Infinitely Many Solutions
E
$$(3, 2, 1, 8)$$
Question 2 of 5: Solve each system:
$$3x_1 - 2x_2 + 5x_3 - 6x_4=0$$ $$5x_1 - 7x_2 + x_3 + 2x_4=34$$ $$15x_1 - 4x_2 + 10x_3 - 12x_4=-18$$ $$x_1 + x_2 + x_3 - x_4=-9$$
Next »
Select the Correct Answer Below: Correct! Cool Emoji Not Correct! Cool Emoji
A
$$(-2, 4, 0, 3)$$
B
No Solution
C
Infinitely Many Solutions
D
$$(-2, -6, 0, 1)$$
E
$$(3, -1, 5, 2)$$
Question 3 of 5: Solve each system:
$$x_1 - x_2 + 2x_3 + 5x_4=20$$ $$-7x_1 - 3x_2 - x_3 =16$$ $$5x_1 + 3x_3 - 6x_4=-22$$ $$2x_1 - 2x_2 + 4x_3 + 10x_4=14$$
Next »
Select the Correct Answer Below: Correct! Cool Emoji Not Correct! Cool Emoji
A
No Solution
B
Infinitely Many Solutions
C
$$(4, 3, -1, 4)$$
D
$$(0, 1, -2, 8)$$
E
$$(5, -2, 9, -5)$$
Question 4 of 5: Solve each system:
$$x_1 - 2x_2 + 7x_3 - x_4=-19$$ $$2x_1 - 6x_2 + 9x_3 + x_4 =-21$$ $$-x_1 + x_2 - 3x_3 - 4x_4=-5$$ $$6x_1 - 2x_2 + 5x_3 - 3x_4=-21$$
Next »
Select the Correct Answer Below: Correct! Cool Emoji Not Correct! Cool Emoji
A
$$(0, 1, -2, 3)$$
B
Infinitely Many Solutions
C
$$(4, -1, 13, -2)$$
D
$$(3, 0, 4, -1)$$
E
No Solution
Question 5 of 5: Solve each system:
$$4x_1 - 3x_2 + x_3 + 7x_4=22$$ $$x_1 + x_2 - 5x_3 + 3x_4 =12$$ $$-8x_1 + 6x_2 - 2x_3 - 14x_4=44$$ $$-2x_1 - 3x_2 + x_3 - 8x_4=19$$
Finish »
Select the Correct Answer Below: Correct! Cool Emoji Not Correct! Cool Emoji
A
Infinitely Many Solutions
B
$$(-3, -5, 2, 7)$$
C
$$(-1, 2, 6, 7)$$
D
No Solution
E
$$(5, 3, -2, 6)$$

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