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aliya0001 [1]
3 years ago
11

Graph the following and determine in which quadrants the graphs lie: y= 1/3x

Mathematics
1 answer:
natta225 [31]3 years ago
7 0

y = 1/3x

The slope is 1/3 ( the slope is the number with the variable x).


There is no other operation ( addition or subtraction) so the y- intercept is 0

The first point of the graph would be (0,0)


Calculate another point , lets use x = 3

y = 1/3(3) = 1

The second point is (3,1)


The line of the graph is an angled line which is located in quadrant 1 and 3.


See attached picture:




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Q6) Renee buys 5kg of sweets to sell. She pays £10 for the sweets. Renee puts all the sweets into bags. She puts 250g of sweets
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30% percent profit

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100 pence in a pound.

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She pays 10×100=1000 pence.

She put them into 5000÷250=20 bags.

She sells the bags for 65 pence each.

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At Burnt Mesa Pueblo, archaeological studies have used the method of tree-ring dating in an effort to determine when prehistoric
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Answer:

a) (1215, 1297)

b) (1174,  1338)

c) (1133, 1379)      

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 1256

Standard Deviation, σ = 41

Empirical Rule:

  • Also known as 68-95-99.7 rule.
  • It states that almost all the data lies within three standard deviation for a normal data.
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  • About 95% of data lies within two standard deviation of mean.
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a) range of years centered about the mean in which about 68% of the data lies

\mu \pm 1(\sigma)\\=1256 \pm 41\\=(1215, 1297)

68% of data will be found between 1215 years and 1297 years.

b) range of years centered about the mean in which about 95% of the data lies

\mu \pm 2(\sigma)\\=1256 \pm 2(41)\\=1256 \pm 82\\=(1174, 1338)

95% of data will be found between 1174 years and 1338 years.

c) range of years centered about the mean in which about all of the data lies

\mu \pm 3(\sigma)\\=1256 \pm 3(41)\\=1256 \pm 123\\=(1133, 1379)

All of data will be found between 1133 years and 1379 years.

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