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3 years ago

Which number is irrational, an integer, and a real number?

Mathematics

1 answer:

Montano1993 [528]3 years ago

6 0

name me some numbers plz

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Please answer There is a bag filled with 3 blue and 5 red marbles. A marble is taken at random from the bag, the colour is noted

Misha Larkins [42]

Answer:

$\frac{15}{28}$ is the required probability.

Step-by-step explanation:

Total number of Marbles = Blue + Red $= 3 + 5 = 8$

Probability of getting blue $= \frac{3}{8}$

Probability of not getting a blue $=\frac{5}{8}$

To get exactly one blue in two draws, we either get a blue, not blue, or a not blue, blue.

First Draw Blue, Second Draw Not Blue:

1st Draw: $P(Blue) = \frac{3}{8}$

2nd Draw: $P(Not\:Blue)=\frac{5}{7}$ (since we did not replace the first marble)

To get the probability of the event, since each draw is independent, we multiply both probabilities.

$P(Event)=\frac{3}{8}\cdot \frac{5}{7}=\frac{15}{56}$

First Draw Not Blue, Second Draw Not Blue:

1st Draw: $P(Not\:Blue)=\frac{5}{8}$

2nd Draw: $P(Not\:Blue)=\frac{3}{7}$ (since we did not replace the first marble)

To get the probability of the event, since each draw is independent, we multiply both probabilities.

$P(Event)=\frac{5}{8}\cdot \frac{3}{7}=\frac{15}{56}$

To get the probability of exactly one blue, we add both of the events:

$\frac{15}{56}+\frac{15}{56}=\frac{15}{28}$

4 0

3 years ago

A ticket to a particular theme park regularly costs $84.99, however the theme park is running a spring break special for 15% off

Ilya [14]

Answer: 306.30

Step-by-step explanation:

DiscountPrice = 84.99 - (84.99 x 0.15)

Cost for 4 = discountPrice x 4

Total = cost for 4 x 1.06

5 0

2 years ago

Read 2 more answers

Please help!!! Verify which of the following are identities.

Ierofanga [76]

Answer:

First one

Step-by-step explanation:

None of the equations are identities

4 0

3 years ago

Are 2/5 4/10 6/15 and 8/20 proportional?

Over [174]

Yes, since you can multiply 2/5 numerator and denominator to get the rest of the fractions, it makes them all equivalent.

5 0

3 years ago

Read 2 more answers

If you lend $500.00 to your brother, what is your opportunity cost?

Shtirlitz [24]

Opportunity cost is the value of the next best alternative when you make a decision; it's what you give up. Understanding opportunity cost allows you to make decisions, knowing both what you are getting and what you are giving up. in the above case of lending of $500.00 to your brothers is What you want most costing $500.

8 0

3 years ago