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3 years ago

-5x+y=-3 and 3x-8y=24

Mathematics

1 answer:

iVinArrow [24]3 years ago

6 0

-5 (2) + 7= -3
3(16)-8(3)=24

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X2-3xy-5xy-7y2+4x2+8y2

Zepler [3.9K]

For this case we must simplify the following expression:

$x ^ 2-3xy-5xy-7y ^ 2 + 4x ^ 2 + 8y ^ 2$

We must add similar terms taking into account that:

Equal signs are added and the same sign is placed.

Different signs are subtracted and the major sign is placed.

$(x ^ 2 + 4x ^ 2) + (- 3xy-5xy) + (- 7y ^ 2 + 8y ^ 2) =\\5x ^ 2-8xy + y ^ 2$

Thus, the simplified expression is:

$5x ^ 2-8xy + y ^ 2$

Answer:

$5x ^ 2-8xy + y ^ 2$

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3 years ago

Solve for M -3+m/ 9 = 10

sweet-ann [11.9K]

Step-by-step explanation:

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m/9=10+3

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2 years ago

2. For a particular model of a car, a dealer offers 3 sizes of engines, 2 types of stereos, 18 body

Gnesinka [82]

The given details follow the product rule. The different model of the car available are 756.

Given that:

$Engines = 3$

$Stereos = 2$

$Body=18$

$Color = 7$

The different possibility is calculated using the following product rule:

$Total =Engines \times Stereos \times Body \times Color$

So, we have:

$Total = 3\times 2\times 18 \times 7$

$Total = 756$

Hence, there are 756 different models available.

Read more about product rules at:

brainly.com/question/3944602

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2 years ago

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C. 63.4

Step-by-step explanation:

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Answer:

Step-by-step explanation:

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1 year ago