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mafiozo [28]
3 years ago
8

The average life of a lightbulb is 2500 h, with a standard deviation of 200 h. Suppose that 10,000 bulbs are purchased to equip

a new building. Assume that the lives are normally distributed. How many of the light bulbs would be expected to burn out after just 1800 h?
Mathematics
1 answer:
Anna35 [415]3 years ago
4 0
0 lightbulbs would be expected to burn out in 1800 hours
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Given h(x) = 2x - 1, find h(-1).
patriot [66]

Answer:

h(-1) =-3

Step-by-step explanation:

h(x) = 2x - 1

Let x = -1

h(-1) = 2(-1) -1

h(-1) = -2-1

h(-1) = -3

3 0
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Just do 11 or 12 or both please im really tired and it 1:34 in the morning plz help
kumpel [21]

Answer:

11)<em>(-1)</em>

<em>12)1.7</em>

Step-by-step explanation:

11)y+z/x                

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 (-5)/5

<em>    (-1)</em>

12)x-5z/y

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   1.666

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<em></em>

<em>Hope this helps you</em>

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3 0
2 years ago
Which one of these numbers do not belong 21 15 6 16 27
NNADVOKAT [17]

That would be 16 because all the others are multiples of 3.

6 0
3 years ago
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On Saturday morning, Owen earned $26. By the end of the afternoon he had earned a total of $57. Enter an equation, using x as yo
AnnyKZ [126]

Answer:

$26 + X = $57

$26 + $31 = $57

X = $31

My first time ever answering a question hope it helped =)  (And sry it took long)

Step-by-step explanation:

5 0
3 years ago
What's the opposite of -4
Thepotemich [5.8K]

Answer:

4

Step-by-step explanation:

It's a opposite of -4 so the opposite would be 4

3 0
3 years ago
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