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const2013 [10]
3 years ago
11

I could use some help on this, thank you!​

Mathematics
1 answer:
jarptica [38.1K]3 years ago
4 0

Answer:

B

Step-by-step explanation:

y = 3x - 5 = 37 \\ 3 \times 14 = 42 \\ 42 - 5 = 37

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In a popular tale of wizards and witches, a group of them finds themselves in a room with unmarked doors which change position,
SSSSS [86.1K]

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!!!

7 0
3 years ago
1. What percent of 600 is 12?
Ainat [17]

Answer:

2%

Step-by-step explanation:

Set up a proportion

x / 100 = 12 / 600

Cross multiply

600x = 1200

Divide both sides by 600

x = 2

I hope this helped and please mark me as brainliest!

4 0
2 years ago
Read 2 more answers
HELP PLEASE HELP HELP
kupik [55]
I think it’s 0but not s
5 0
2 years ago
Round 345276 to the nearest thousand
TiliK225 [7]
Since there is no decimal point, the answer is 345276.
8 0
3 years ago
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What is the value of x in the diagram below?
VARVARA [1.3K]

Answer:

<h2>7.2</h2>

option B is the right option.

Step-by-step explanation:

<h3>Using leg rule</h3>

\frac{bc}{ab}  =  \frac{ab}{bd}

Plug the values:

\frac{20}{12}  =  \frac{12}{x}

Apply cross product property

20 \times x = 12 \times 12

Calculate the product

20x = 144

divide both sides of the equation by 20

\frac{20x}{20}  =  \frac{144}{20}

Calculate:

x = 7.2

hope this helps..

Good luck...

4 0
3 years ago
Read 2 more answers
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