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sergij07 [2.7K]
3 years ago
15

a company selling light bulbs claims in its advertisements that its light bulbs’ average life is 1000 hours. In fact, tte lifesp

an of these light bulbs is normally distributed with a mean of 1000 hours and a standard deviation of 100 hours. Use this information to answer Parts A and B below. ANSWER NOW FOR THE BRAINLIEST!!!!!!
Mathematics
1 answer:
Phantasy [73]3 years ago
5 0

Answer:

you didn't provide the parts A and B

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45 degreese is used in a pie chart to reperesent 6 people. How many people were there altogehter?
KatRina [158]
We can solve this problem by the rule of three.
A complete pie chart has 360º. 

45º----------------------6 people
360º--------------------    x

x=(360º*6 people) / 45º=48 people.

Answer; 48 people. 
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3 years ago
Find the solution to the following system using substitution or elimination: y = 3x + 2 y = -2x - 8 O A. (-5,-) OB. (-2,-4) O C.
mr Goodwill [35]

Answer:

B. (-2,-4)

Explanation

Given equations:

   y = 3x + 2

   y = -2x - 8

Solving both equations will yield the values of x and y;

Solution:

   y = 3x + 2    ----- (i)

   y = -2x - 8   ------ (ii)

Using substitution method, input equation i, into ii

    3x + 2 = -2x - 8

Collect like terms and solve;

     3x + 2x = -8 -2

         5x  = -10

            x  = -2

Then put x = -2 into i, to find y

      y = (-2 x 3) + 2

       y = -6 + 2 = -4

So, the solution of the equation is B. (-2,-4)

6 0
3 years ago
A football team started at the line of scrimmage. On the first play of the drive, the team lost 4 yards. On the second play of t
madam [21]
It’s supposed to be -4+45=41
5 0
3 years ago
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What type of conic section is the following equation? x2 - 4y2 = 100 parabola circle hyperbola ellipse
chubhunter [2.5K]

Answer:

hyperbola

Step-by-step explanation:

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3 years ago
In a class of 250 college students, 26% said red was their favorite color. How many students
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65%

Step-by-step explanation:

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3 years ago
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