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BabaBlast [244]
2 years ago
10

Find what equals to x and what equals to y

Mathematics
1 answer:
Nuetrik [128]2 years ago
3 0

Answer:

x=15√2  y=90 degrees.

Step-by-step explanation:

Thanks to the Pythagorean Theorem we know that with any right triangle, A^2+B^2=C^2. In this case we can use 15^2+15^2=sqrt of 450. The square root of 450 is 15 times the square root of 2. Thus x=15√2. Now we need to find y. All angles in a triangle add up to 180 so if we have 45+45+y=180 then y=90.

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Answer:

Expected number of hours before the the group exits the building = E[Number of hours] = 3.2 hours

Step-by-step explanation:

Expected value, E(X) is given as

E(X) = Σ xᵢpᵢ

xᵢ = each variable

pᵢ = probability of each variable

Let X represent the number of hours before exiting the building taking each door. Note that D = Door

D | X | P(X)

1 | 3.0 | 0.2

2 | 3.5 | 0.1

3 | 5.0 | 0.2

4 | 2.5 | 0.5

E(X) = (3×0.2) + (3.5×0.1) + (5×0.2) + (2.5×0.5) = 3.2 hours

Hope this Helps!!!

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a store received 12 boxes of doughnuts. Each box contained 12 doughnuts. Which expression represents how many doughnuts there ar
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Step-by-step explanation:

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3 years ago
Write an inequality that represents the verbal expression. 9 less than a number n is less than 17.
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9>n>17
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In 2003 the population of Africa was about 7.7 million people which is 2million more than 3 times the population in 1950
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Goshia [24]

The price of fan was 20 Dollars 55 cents last week.

Step-by-step explanation:

Let,

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The price of fan was 20 Dollars 55 cents last week.

Keywords: Percentage, multiplication.

Learn more about percentages at:

  • brainly.com/question/2140933
  • brainly.com/question/2142762

#LearnwithBrainly

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