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11.04.2020 • 

Mathematics

This graph relates the radii of circles to their approximate circumferences.

Radii and Circumferences of Circles
On a coordinate plane, the x-axis is labeled Radius (in centimeters) and the y-axis is labeled Circumference (in centimeters). A line goes through points (0, 0), (1, 6.28) and (2, 12.56).

According to the graph, which must be true?
When the circumference is approximately 4 cm, the radius is 25.12 cm.
When the radius is 5 cm, the circumference is approximately 28.26 cm.
When the circumference is approximately 5 cm, the radius is 28.26 cm.
When the radius is 4 cm, the circumference is approximately 25.12 cm.

Ответ:

ineedhelp368

23.01.2022

Mathematics

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When the radius is 4 cm, the circumference is approximately 25.12 cm.

Step-by-step explanation:

We see a multiple pattern of  y = ( 5.28 (x1) + 1 )  

when x =  1 we (x1) +1

When x = 2 we (x2)+2

when x = 3 we (x3)+3

when x = 4 we (x4) : y = (5.28 x4) + 4 = 25.12

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Ответ:

clonetrooper099

12.03.2022

Mathematics

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Hi there! The answer is 1460 pens

The school pays $440 for the pens and pencils.
If the school bought 1500 pencils, their total expense on pencils can be found by multiplying the amount of pencils, by the price per pencil.


Therefore, the total expense on pencils is $75. Now we can calculate that there is $440 - $75 = $365 left for buying pens.

To finally find the amount of pens bought, we need to divide our remaining budget by the price per pen.


Hence, the school bought 1460 pens. 

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