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goblinko [34]
3 years ago
14

a piano has 52 white keys and 36 black keys. What is the probability of pressing a white key? answer as a fraction in simplest f

orm
Mathematics
2 answers:
Anna35 [415]3 years ago
8 0
The answer is 13/22, the person above is correctttt
Darina [25.2K]3 years ago
5 0
P=52/(52+36)=52/88=13/22
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<h2>Answer:</h2>

Probability=\frac{1}{24}

<h2>Step-by-step explanation:</h2>

As the question states,

John's brother has Galactosemia which states that his parents were both the carriers.

Therefore, the chances for the John to have the disease is = 2/3

Now,

Martha's great-grandmother also had the disease that means her children definitely carried the disease means probability of 1.

Now, one of those children married with a person.

So,

Probability for the child to have disease will be = 1/2

Now, again the child's child (Martha) probability for having the disease is = 1/2.

Therefore,

<u>The total probability for Martha's first child to be diagnosed with Galactosemia will be,</u>

Probability=\frac{2}{3}\times \frac{1}{2}\times \frac{1}{2}\times \frac{1}{4}\\Probability=\frac{1}{24}

(Here, we assumed that the child has the disease therefore, the probability was taken to be = 1/4.)

<em><u>Hence, the probability for the first child to have Galactosemia is \frac{1}{24}</u></em>

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3 years ago
Find the measure of the exterior Angle1 (I’m a bit confused on how exterior angles work)
sergejj [24]

Answer:

70

Step-by-step explanation:

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The domain are all the inputs, that is; the x-values

Domain = { -3, 0, 1, 5}

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Range = { 3, 1, -2, 4, -1}

This is just a relation and not a function, as we have more than 2 same value of x

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A. Kristina will sell 294 items in 28 days if she stays on her current pace.
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