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Dafna11 [192]
3 years ago
15

Solve the system by using elementary row operations on the equations. Follow the systematic elimination procedure.

Mathematics
1 answer:
Natali5045456 [20]3 years ago
4 0

Answer:

Step-by-step explanation:

The given equation is expressed as

x1 + 2x2 = -24- - - - - - - - --1

x1 + 7x2 = -11- - - - - - - --2

We would eliminate x1 by subtracting equation 2 from equation 1. It becomes

- 5x2 = - 13

Dividing both sides of the equation by - 5, it becomes

- 5x2/- 5 = - 13/- 5

x2 = 13/5

Substituting x2 = 13/5 into equation 2, it becomes

x1 + 7 × 13/5 = -11

x1 + 91/5 = - 11

x1 = - 11 - 91/5

x1 = - 146/5

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nadezda [96]

Answer:

Discount percentage = 10.5% (Approx)

Therefore the discount is seller offering you is 10.5 % .

Step-by-step explanation:

Discount = Marked price - Selling price

As given

You are offered an item for $17.85. If the seller states he normally sells the same item for $19.95 .

Here

Marked price = $19.95

Selling price = $17.85

Discount = 19.95 - 17.85

           = $2.1

\frac{2.1 x 100}{19.95}

\frac{210}{19.95}

Discount percentage = 10.5% (Approx)

Therefore the discount is seller offering you is 10.5 % .

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2 years ago
What value makes 2 square root 51 equal to 10 square root 51x
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25 is the answer
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Find 3/5 - 1/4 <br><br> a 4/9<br><br> b 1/2<br><br> c 2<br><br> d 7/20
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Answer:

7/20

Step-by-step explanation:

Hope this helped!

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Attached please find my maths problem to be solved and graphed
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Answer:

Attached is the sketch

X-axis intersections:

(-3,0)

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Points of inflection:

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Step-by-step explanation:

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