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mina [271]
3 years ago
9

Extra questions for chapter 13 and 14 maths ch-13- surface area and volume and ch-14- statistics

Mathematics
1 answer:
Elden [556K]3 years ago
3 0
Www.khanacademy.org that website should he
p
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Plz help due tomorrow!!!!
Talja [164]

Answer:

E' = (-4, 3)  Answer C in your list of options

See attached image for the plot.

Step-by-step explanation:

Recall that a rotation in 180 degrees around the origin produces the following change in coordinates: (x, y) --> (-x, -y)

Therefore, since we read the coordinates of point E as: (-4, 3),

the new coordinates after the rotation will be: (4, -3) and the point will look like the red point in the attached image.

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3 years ago
Janaya buys a postcard from each travel destination she visits. Before starting her travels this year, Janaya had 20 postcards.
MrRa [10]

Answer:

The percentage increase in Jayana's postcard collection is 15%

Step-by-step explanation:

Jayana had 20 postcards last year

With 3 more postcards this year

From the given equation Quantity = Percent x Whole

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Let P = Percent/100%

Quantity = Increment in postcard = 3 postcards

Whole = The total postcards from last year = 20 postcards

Hence,

3 postcards = P x 20 postcards

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Recall P = Percent/100%

∴ Percent = P x 100% = 0.15 x 100% = 15%

The percentage increase in Jayana's postcard collection is 15%

4 0
3 years ago
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