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Mice21 [21]
1 year ago
11

A box contains four red, three blue, and six green lenses. two lenses are randomly selected from the box. find the probability o

f getting two red lenses when two are selected if the first selection is not replaced before the second selection is made
Mathematics
1 answer:
andrew-mc [135]1 year ago
6 0

The probability of getting two red lenses when two are selected will be 2/13.

<h3>What is probability?</h3>

The probability of favorable events to the total number of occurrences.

A box contains four red, three blue, and six green lenses.

Two lenses are randomly selected from the box.

Then the probability of getting two red lenses when two are selected if the first selection is not replaced before the second selection is made will be

The total number of the event will be

Total event = ¹³C₂

Total event = 78

Then the favorable event will be

Favorable event = ⁴C₁ x ³C₁

Favorable event = 4 x 3 = 12

Then we have

P = 12 / 78

P = 2/13

More about the probability link is given below.

brainly.com/question/795909

#SPJ1

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Answer:


Step-by-step explanation:

Try and become familiar with a program like Desmos. It will do wonderful things for you.

I have graphed

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Blue: y = - 4x + 5 Same note as above.


4 0
3 years ago
During the assembly of a certain piece of exercise equipment, 3 welds are required during different phases of the assembly proce
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Answer:

99.9973 %

Step-by-step explanation:

This is a binomial probability distribution.

Since the probability of satisfactory welds = 97% = 0.97 and the probability of defective welds = 3% = 0.03.

Since there are 3 welds and we require at least one being defective, our binomial probability is

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5 0
3 years ago
Al goes 8 mph Ben goes 22 mph in the opposite direction. How many hours has ben traveled when they are 180 miles apart?
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after 6 hours Al and Ben will be 180 miles apart.

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3 0
3 years ago
If x = 4cosa and y = 5tana, find (x^2/16) - (y^2/25)​
Cloud [144]

x = 4 \cos(a)

\frac{x}{4}  =  \cos(a)  \\

( { \frac{x}{4} })^{2}  =  ({ \cos(a) })^{2}  \\

\frac{ {x}^{2} }{16}  =  {cos}^{2} (a) \\

_____________________________________________

y = 5 \tan(a)

\frac{y}{5}  =  \tan(a)  \\

( { \frac{y}{5} })^{2}  = ( { \tan(a) })^{2}  \\

\frac{ {y}^{2} }{25}  =  {tan}^{2} (a) \\

_____________________________________________

Thus ;

\frac{ {x}^{2} }{16}  -  \frac{ {y}^{2} }{25}  =  \\

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2 years ago
What is the median for this list of numbers? 3, 6, 9, 10, 12
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The answer is 9 because if you put those numbers in a life from smallest to biggest and take one off each side your left with 9
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2 years ago
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