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melomori [17]
3 years ago
13

A jar contains 7 orange, 3 yellow, and 5 blue marbles. If you pick one without looking, what is the probability that the marble

you pick will be neither orange nor yellow?
show work pls tnx!
Mathematics
2 answers:
Softa [21]3 years ago
6 0

Answer:

The probability would be 5/15 or 1/3

Total = 7+3+5

= 15

yellow = 3

orange = 7

blue marbles = 5

storchak [24]3 years ago
3 0

Answer:

⇒Pgreen or yellow=5\11

Step-by-step explanation:

Probability here is the chance of selection out of a total. So, we need to first find the total number of marbles.

total

=

5

+

3

+

2

+

1

=

11

So there are

11

marbles total. The probability that we pick one of the

3

green marbles out of the

11

is simply that ratio:

P

green

=

3

11

Same idea for yellow:

P

yellow

=

2

11

The probability of picking either of these colors is simply the sum of their probabilities.

P

green or yellow

=

P

green

+

P

yellow

=

3

11

+

2

11

=

5

11

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Move 1 to the left side of the equation by subtracting it from both sides.

\sqrt{2x -5 - 2 - 1 = 0 }

Subtract 1 from -2.

\sqrt{2x -5 - 3 = 0 }

Add 3 to both sides of the equation.

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To remove the radical on the left side of the equation, square both sides of the equation.

\sqrt{2x - 5^3 = 3^2}

Simplify each side of the equation.

Multiply the exponents in (( 2x - 5) ^\frac{1}{2})^2 .

Apply the power rule and multiply exponents, (a^m)^n = a^mn

(2x -5)^\frac{1}{2}.2 = 3^2

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(2x - 5)^1 = 3^2

Simplify.

2x - 5 = 3^2

Raise 3 to the power of 2.

2x - 5 = 9

Solve for x

Move all terms not containing x to the right side of the equation.

Add 5  to both sides of the equation.

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Add 9 and 5.

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Divide each term by 2  and simplify.

Divide each term in 2x = 14 by 2.

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Cancel the common factor of 2.

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Divide 14 by 2.

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