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zlopas [31]
3 years ago
6

the amount of time a certain brand of light bulb lasts is normally distributed with a mean if 1800 hours and a standard deviatio

n of 85 hours. Using the empirical rule, what percentage of light bulbs last between 1630 hours and 1970 hours?
Mathematics
1 answer:
RUDIKE [14]3 years ago
4 0

Answer:

340%

Step-by-step explanation:

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20

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Water is being drained out of a swimming pool at a constant rate of 780 gallons per hour. The swimming pool initially contained
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45,000-780h=y

It looses 780 gallons per hour so you do 780 time # of hours.

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4 years ago
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For the function g defined by g(x)=70−3x find g(−x),−g(x), and −g(−x).
nirvana33 [79]

Answer:

  • g(-x) = 70 +3x
  • -g(x) = -70 +3x
  • -g(-x) = -70 -3x

Step-by-step explanation:

Put the minus signs where the problem statement tells you. As with any function, the argument replaces the variable in the function definition. That is, for g(-x), you put (-x) where x is in the definition of the function.

  g(-x) = 70 -3(-x) = 70 +3x

  -g(x) = -(70 -3x) = -70 +3x

  -g(-x) = -(70 -3(-x)) = -70 -3x

4 0
3 years ago
Please help solve for x...not sure if my answer is correct.
Lilit [14]

Answer:

x= x ≥ 2 or x ≤ -2

Step-by-step explanation:

6 0
3 years ago
Connie bought 172 tulip bulbs. She wants to plant an equal number of bulbs in each of 4 flower beds. How many bulbs should Conni
Levart [38]

Answer:

43

Step-by-step explanation:

172/4= 43

4 0
3 years ago
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