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3 years ago

Help? :)

Mathematics

2 answers:

snow_tiger [21]3 years ago

7 0

Answer:

Step-by-step explanation:

Because he replaced the bulbs it is still the same fraction 7/22 you then multiply it twice cause it is the same possibility of getting orange.

horsena [70]3 years ago

3 0

Answer:

7 over 22 multiplied by 7 over 22 equal 49 over 484

Step-by-step explanation:

There are 22 bulbs in the box.

The probability that he got an orange on the first draw is

P (orange) = orange/ total

= 7/22

He puts the bulb back so there are still 22 bulbs in the box

The probability that he got an orange on the second draw is

P (orange) = orange/ total

= 7/22

To find the probability that he got orange, orange

P (orange, orange) = 7/22 * 7/22

=49/484

You might be interested in

Henry rolls a fair dice 42 times. How many times would Henry expect to roll a number greater than 5?

Sonja [21]

Answer:

7 times

Step-by-step explanation:

There is one number greater than 5 on a dice - that is the number 6.

So probability of throwing a six = 1/6.

So it is 42 * 1/6.

5 0

3 years ago

Answer po plss plss plss

Kipish [7]

46-(-26)
= 46+26
= 72

As - and - together makes plus.

Hope it helps you and please mark my answer as the brainliest

8 0

3 years ago

Read 2 more answers

Find the slope, y-intercept, and x-intercept of the graph of 3x+7y=14 Show your work in detail.

Vika [28.1K]

3x + 7y = 14

Subtract 3x from both sides

7y = -3x + 14

Slope is equal to -3.

3 0

4 years ago

Plssss help

Andre45 [30]

Answer:

A) $\displaystyle \frac{1}{77}$ .
B) $\displaystyle \frac{12}{77}$ .
C) $\displaystyle \frac{4}{11}$ .

Step-by-step explanation:

All marbles here are identical. Also, the question isn't concerned about the order in which the marbles are drawn. Thus, all calculations here shall be combinations rather than permutations.

How many ways to choose three out of six identical red marbles without replacement?

$\displaystyle _6C_3 = c(6, 3) = {6\choose 3} = 20$ .

Note that these three expressions are equivalent. They all represent the number of ways to choose 3 out of 6 identical items without replacement.

How many ways to choose three out of all the 6 + 10 + 6 = 22 marbles?

$\displaystyle _{22} C_{3} = 1540$ .

The probability of choosing three red marbles out of these 22 marbles will be:

$\displaystyle \frac{\text{Number of ways for choosing three out of six red marbles}}{\text{Number of ways to choose three out of 22 marbles}} = \frac{20}{1540} = \frac{1}{77}$ .

How many ways to choose two out of six identical red marbles without replacement?

$\displaystyle _6 C_2 = 15$ .

How many ways to choose one out of 10 + 6 = 16 non-red marbles?

$_{16} C_1=16$ .

Choosing two red marbles does not influence the number of ways of choosing a non-red marble. Both event happen and are independent of each other. Apply the product rule to find the number of ways of choosing two red marbles and one non-red marble out of the pile of 22.

$_6 C_2 \cdot _{16} C_1= 240$ .

Probability:

$\displaystyle \frac{240}{1540} = \frac{12}{77}$ .

Double check that the order doesn't matter here.

None of the marbles are red. In other words, all three marbles are chosen out of a pile of 10 + 6 = 16 white and blue marbles. Number of ways to do so:

$_{16} C_{3} = 560$ .

Probability:

$\displaystyle \frac{560}{1540}= \frac{4}{11}$ .

5 0

4 years ago

Read 2 more answers

Which graph represents the solutions to the inequality |2x − 6| < 4? (5 points) number line with a closed circle on 1, shadin

zvonat [6]

The graph that represents the inequality is:

Number line with an open circle on 1, shading to the right and an open circle on 5, shading to the left.

<h3>What is the inequality?</h3>

The inequality is:

|2x - 6| < 4

Which means that the distance of 2x - 6 to the origin is less than 4, hence:

-4 < 2x - 6 < 4.

The solution is:

2x - 6 > -4

2x > 2

x > 1

2x - 6 < 4

2x < 10

x < 5

The solution has open circles at x = 1 and x = 5, as they are not part of the solution, and the shading is in the middle, as the solution is 1 < x < 5, hence the correct option is:

Number line with an open circle on 1, shading to the right and an open circle on 5, shading to the left.

More can be learned about inequalities at brainly.com/question/25235995

#SPJ1

6 0

2 years ago