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ohaa [14]
2 years ago
8

HELP due in 5 mins.. Reference books are for use in the library. There are 16 bookshelves for the reference books. After use, th

ey need to be returned to a special collection box for shelving. If 128 reference books are in use and 84 reference books are in the collection box, how many reference books are on the shelf?
Mathematics
1 answer:
netineya [11]2 years ago
8 0

Answer:

The answer is 13.25 I'm so sorry if its incorrect please let me know so I can fix it

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In one grade of 150 students, the ratio of boys to girls
juin [17]

You idiot you answered your own question!

7 0
3 years ago
The physical plant at the main campus of a large state university recieves daily requests to replace florecent lightbulbs. The d
zaharov [31]

Answer:

P(61≤ X≤94) = 49.85%

Step-by-step explanation:

From the given information:

The mean of the bell shaped fluorescent light bulb μ = 61

The standard deviation σ = 11

The objective of this question is to determine the approximate percentage of light bulb replacement requests numbering between 61 and 94 i.e P(61≤ X≤94)

Using the empirical (68-95-99.7)rule ;

At 68% , the data lies between  μ - σ and μ + σ

i.e

61 - 11 and 61 + 11

50 and 72

At  95%, the data lies between  μ - 2σ and μ + 2σ

i.e

61 - 2(11) and 61 + 2(11)

61 - 22 and 61 +22

39   and   83

At 99.7%, the data lies between  μ - 3σ and μ + 3σ

i.e

61 - 3(11) and 61 + 3(11)

61 - 33 and 61 + 33

28   and   94

the probability equivalent to 94 is when  P(28≤ X≤94) =99.7%

This implies that ,

P(28≤ X≤94) + P(61≤ X≤94) = 99.7%

P(28≤ X≤94) = P(61≤ X≤94) = 99.7 %    

This is so because the distribution is symmetric about the mean

P(61≤ X≤94) = 99.7 %/2

P(61≤ X≤94) = 49.85%

5 0
2 years ago
What is the image of (-4,-4) after a dilation by a scale factor of 3 centered at the<br> origin?
gtnhenbr [62]

Answer:

(-12, -12)

Step-by-step explanation:

Since the scale factor is 3, you would multiply the x-coordinate and y-coordinate by it.

-4×3=-12

Hope this helps!!

3 0
2 years ago
What is the answer for this problem if f(x)= 3x+10x and g(x)=5x-3, find (f+g)(x).
hammer [34]
(f+g)(x) =f(x)+g(x)=3x+10x+5x-3=\boxed{18x-3}\ D.
6 0
3 years ago
Read 2 more answers
What is mMHJ? Please help
Ghella [55]
2x - 20 = x + 15

x = 35

Now plug x in:

2*35 - 20 = 50 degrees






7 0
3 years ago
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