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4 years ago

Which values for A and B will create infinitely many solutions for this system of equations

Mathematics

1 answer:

nikdorinn [45]4 years ago

8 0

Answer:

A = 6, B = -15

Step-by-step explanation:

In order for there to be infinitely many solutions, the equations must be dependent. That is, one of them must be a multiple of the other. Here, the multiplier is apparently -1.

Comparing coefficients on the left, we see that the bottom equation has an x-coefficient that is the opposite of the one in the top equation. So, to make y-coefficients opposite, the top equation should read ...

4x -6y = 15 . . . . . A = 6

Carrying that through, the bottom equation should read ...

-4x +6y = -15 . . . . . B = -15

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Step-by-step explanation:

There are four solid and dotted sections and eight sections in total so the probability is 4/8 or 1/2

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3 years ago

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The graph shows how much rain falls over time during a storm. What information can you draw from the point (7, 14) on the graph?

posledela

Answer:

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Step-by-step explanation:

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3 years ago

Perimeter of a trapezoid with bases x, 2x and sides x+2 and 2x-3

Simora [160]

Answer:

Perimeter of trapezoid = 6x - 1

Step-by-step explanation:

a trapezoid has two bases (x and 2x) and two sides ( x+2 and 2x-3)

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8 0

3 years ago

In 2011, Americans spent approximately $50.9 billion on their pets. Of this amount, $14.1 billion was for veterinarian bills. Wh

alex41 [277]

Answer: The percent of the total was spent on veterinarian bills is 27.70% ( approx).

Step-by-step explanation:

Given, In 2011, Americans spent approximately $50.9 billion on their pets.

i.e. Total amount they spent on pets = $50.9 billion

Amount spent for veterinarian bills. = $14.1 billion was for veterinarian bills.

Then, the percent of the total was spent on veterinarian bills would be :

$\dfrac{\text{Amount spent for veterinarian bills. }}{\text{Total amount they spent on pets}}\times100\\\\=\dfrac{14.1}{50.9}\times100\\\\=27.7013752456\approx27.70\%$

Hence, the percent of the total was spent on veterinarian bills is 27.70% (approx).

5 0

4 years ago

Are these answers right?

Arturiano [62]

Yes they are correct

7 0

3 years ago