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olchik [2.2K]
3 years ago
11

Use the method of Gauss-Jordan elimination (trails—forming (lie augmented matrix into reduced echelon form) to solveProblem in S

ection 3.2In Problems, use elementary row operations to transform each augmented coefficient matrix to echelon form. Then solvethe system by back substitution2x1+4fl—x3—2x4+2x5=6x1+3x2+2x3—7x4+3x5=95x1+8fl—7X3+6x4+x5=4

Mathematics
1 answer:
Nezavi [6.7K]3 years ago
7 0

Answer:

Step-by-step explanation:

Answer is in below attachment

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Which expression ids equivalent to 5y + 2y +6x +2y-x
Alexxx [7]

Answer:

9y + 5x

Step-by-step explanation:

5y + 2y +6x +2y-x

(5 + 2 + 2)y + (6 - 1)x

9y + 5x

7 0
3 years ago
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Evaluate the following expression when x = -5 and y = 25. A. -3,130 B. 620 C. 3,120 D. -630
lys-0071 [83]

Answer: question not complete

Step-by-step explanation: add the expression

6 0
3 years ago
Sam spent StartFraction 5 Over 6 EndFraction of an hour at the dentist’s office. He spent StartFraction 1 Over 10 EndFraction of
ioda

Answer:

Step-by-step explanation:

Dentist's Office = 5/6 of an hour. An hours is 60 minutes

therefore he spent 5/6 x 60 = 50 minutes at the Dentist

1/10 of those 50 minutes were spent in the waiting room that is 1/10 x 50 = 5 minutes

Therefore Sam Spent 45 minutes at the Dentist office

I think the second part of your question is missing

6 0
2 years ago
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Please answer this correctly
valkas [14]

Answer:

all of them are valid solutions

Step-by-step explanation:

So we plug in values of t below and get:

18 is < 107

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7 0
3 years ago
A bird releases waste from a height of
shepuryov [24]

Answer:

5secs

Step-by-step explanation:

Given the equation of the height expressed ad;

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Given that initial height = 400feet

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The waste will hit the ground at when h(t) = 0

substitute

0 =  - 16t^2 + 400

16t^2 = 400

t² = 400/16

t² = 25

t = √25

t = 5secs

Hence it will take the easte 5secs to hit the ground

7 0
2 years ago
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