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3 years ago

15

Eleven purple marbles, seven orange marbles and two pink marbles are in a bag. What is the probability of selecting a purple mar

ble, not replacing it, and then selecting an orange marble?
19%

20%

21%

22%

2 answers:

Mice21 [21]3 years ago

5 0

Answer:

20%

Step-by-step explanation:

Colt1911 [192]3 years ago

5 0

The correct answer is 20%.

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If you have 2 different slopes what is true about the slopes

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Step-by-step explanation:

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3 years ago

What is the half of 4959?

AfilCa [17]

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Step-by-step explanation:

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3 years ago

Mario has a fish tank with 70 goldfish in it. One of the goldfish has unique pelvic fins, which are located on the bottom of the

Black_prince [1.1K]

Answer:

The probability that Mario will randomly catch the right goldfish on the first 5 attempts = 0.069

Step-by-step explanation:

From geometric distribution.

If the probability of success on each trial = P,

then the probability that the Nth trial is the first success

Pr (X = N) = $(1 - P)^{N - 1}$ P

Now,

P = $\frac{1}{70}$

Maximum attempt = 5

Probability that Mario will randomly catch the right goldfish on the first 5 attempts

= $\frac{1}{70}$ + $(1 - \frac{1}{70} )^{1}$ $\frac{1}{70}$ + $(1 - \frac{1}{70} )^{2}$ $\frac{1}{70}$ + $(1 - \frac{1}{70} )^{3}$ $\frac{1}{70}$ + $(1 - \frac{1}{70} )^{4}$ $\frac{1}{70}$

= $\frac{1}{70}$ + $\frac{69}{70}$ $\frac{1}{70}$ + $(\frac{69}{70} )^{2}$ $\frac{1}{70}$ + $(\frac{69}{70} )^{3}$ $\frac{1}{70}$ + $(\frac{69}{70} )^{4}$ $\frac{1}{70}$

= 0.069

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3 years ago

Read 2 more answers

Lucy throws a fair six sided dice . so like the letter that matches the probability of the dice landing on a number between 1 an

irakobra [83]

Answer:

Letter B matches the probability.

Step-by-step explanation:

Lucy throws a fair six sided dice.

Probability of the dice landing on a number between 1 and 6 = $\frac{\text{Favorable outcome}}{\text{Number of events}}$

= $\frac{1}{6}$

On a number line fraction $\frac{1}{6}$ can be represented by,

An small section (A to B) will represent the fraction = $\frac{1}{6}$

Therefore, letter B will match the probability of a dice landing on a number between 1 and 6.

4 0

3 years ago

Diana owns a novelty shop in downtownSan Antonio. She ordered a shipment of48 party hats. Of the 48 hats that sheordered, 25% we

ioda

We can calcualte the number of blue hats by multiplying the total number of hats (n=48) by the proportion of blue hats (p=25%=0.25).

Then:

$B=n\cdot p=48\cdot0.25=12$

There are 12 blue hats.

3 0

2 years ago