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4 years ago

Which graph represents the equation (x + 2)2 + (y + 22 = 25? 70 pts

Mathematics

1 answer:

kati45 [8]4 years ago

7 0

Step-by-step explanation:

$(x + 2) {}^{2} + (y + 22) = 25 \\ \\ x {}^{2} + 2x + 4 + y + 22 = 25 \\ x {}^{2} + 2x + y + 26 = 25 \\ x {}^{2} + 2x + y = 25 - 26 \\ x {}^{2} + 2x + y = - 1$

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Complete Question:

There are 10 marbles. What is the probability of drawing 2 blue marbles if the first marble is NOT placed back in the bag before the second draw.

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Answer:

$P(B_1\ and\ B_2) = \frac{2}{9}$

Step-by-step explanation:

Given

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$Total = 10$

When the first blue marble is selected, the probability is:

$P(B_1) = \frac{n(Blue)}{Total}$

$P(B_1) = \frac{5}{10}$

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The probability of picking a second blue marble is:

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