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V125BC [204]
3 years ago
15

In the following expression which terms can be combined?

Mathematics
1 answer:
joja [24]3 years ago
7 0

the answer is none of the above because the variable cant be combined and 56 cant either.

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The physical plant at the main campus of a large state university recieves daily requests to replace florecent lightbulbs. The d
kozerog [31]

Answer: 49.85%

Step-by-step explanation:

Given : The physical plant at the main campus of a large state university recieves daily requests to replace florecent lightbulbs. The distribution of the number of daily requests is bell-shaped ( normal distribution ) and has a mean of 61 and a standard deviation of 9.

i.e.  \mu=61 and \sigma=9

To find :  The approximate percentage of lightbulb replacement requests numbering between 34 and 61.

i.e. The approximate percentage of lightbulb replacement requests numbering between 34 and 34+3(9).

i.e. i.e. The approximate percentage of lightbulb replacement requests numbering between \mu and \mu+3(\sigma). (1)

According to the 68-95-99.7 rule, about 99.7% of the population lies within 3 standard deviations from the mean.

i.e. about 49.85% of the population lies below 3 standard deviations from mean and 49.85% of the population lies above 3 standard deviations from mean.

i.e.,The approximate percentage of lightbulb replacement requests numbering between \mu and \mu+3(\sigma) = 49.85%

⇒ The approximate percentage of lightbulb replacement requests numbering between 34 and 61.= 49.85%

4 0
3 years ago
Reynaldo is making a model of his school building. The actual building is 28
tankabanditka [31]

Answer:

It's 22.5 inches because the breadth is grater than the length

7 0
3 years ago
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SOMEONE PLEASE HELP HURRY (show work pls
ycow [4]
Answer is b. -1/2
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5 0
3 years ago
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Solve 2|4w−1|=3|4w+2|.
alexandr1967 [171]
-2(4w-1)=3(4w+2)
-8w+2=12w+6
-20w=4
w=-0.2
5 0
3 years ago
Alex wants to put a fence around a square garden. The garden has an area of 784 ft2.
Irina18 [472]
P = 4s
P = 4(28)
P = 112 ft

The perimeter of the garden is 112 feet.
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3 years ago
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