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nasty-shy [4]
3 years ago
13

Solve the system of equations by finding the reduced row-echelon form of the augmented matrix for the system of equations.

Mathematics
1 answer:
krok68 [10]3 years ago
8 0

Answer:

(x, y, z) =(1, -1,2)

Step-by-step explanation:

.............

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Solve 7(x+4)+6(x-3)=8(x-3)-2(x+4)
MAVERICK [17]

Answer:

-6

Step-by-step explanation:

1) distribute: 7x+28+6x-18=8x-24-2x+8

2)combine like-terms: 13x+10=6x-32

3)move the variable to one side: 7x+10=-32

4)subtract 10 from both sides: 7x=-42

5) divide each side by 7: x=-6

6 0
4 years ago
9 (x− 3 =) 45 pleas answer fast
GalinKa [24]

Answer: x = 8

Step-by-step explanation:

9 ( x - 3 ) = 45

distribute 9

9x - 27 = 45

combine constants

9x = 45 + 27

compute 45 + 27

9x = 72

divide both by 9

9x/9 = 72/9

final answer

x = 8

8 0
3 years ago
Read 2 more answers
If f(x) = 3x -11 , find -4f (-3)
gladu [14]

Answer:

80

Step-by-step explanation:

-4f(x)=-12x+44

-4f(-3)=36+44=80

6 0
3 years ago
Which equations represent the line that is parallel to 3x − 4y = 7 and passes through the point (−4, −2)? Check all that apply.
jonny [76]
First, we find the slope of the given line.

<span>3x − 4y = 7

-4y = -3x + 7

y = (3/4)x - 7/4

The slope of the given line is 3/4.
The slope of the parallel line is also 3/4.

Now we need the equation of the line that has slope 3/4 and passes through point (-4, -2),

We use the point-slope form of the equation of a line.

y - y1 = m(x - x1)

y - (-2) = (3/4)(x - (-4))

y + 2 = (3/4)(x + 4)     <---- check option E. Is the fraction 3/4 not there?

y + 2 = (3/4)x + 3

y = (3/4)x + 1

4y = 3x + 4

3x - 4y = -4    <------ this is choice B.
</span>
8 0
3 years ago
1, 1, 2, 6, 24, ... What are the next three numbers in the pattern?
sweet-ann [11.9K]

Answer:

120, 720, 5040

Step-by-step explanation:

1*1 = 1

2*1 = 2

3*2 = 6

4*6 = 24

5*24 = 120

6*120=720

7*720=5040

7 0
3 years ago
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