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Citrus2011 [14]

2 years ago

8

The aspect ratio of a rectangular shape is its length (L) divided by its width (W). It is expressed as L:W or L/W. If the aspect

ratio of a chalkboard is 12:7 and the length is 36 in, what is the width of the chalkboard?

1 answer:

klio [65]2 years ago

3 0

Answer:21

Step-by-step explanation:12 times three is 36 and 7 times 3 is 21

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SAT math scores have a bell-shaped distribution with a mean of 515 and a standard deviation of 114.

nadezda [96]

Hey there mate :)

Analysis :

$401 = 515 - 114 = u - 6$

And

$173 = 515 - 3.114 = u - 36$

$= \frac{p(u - 36 < u < u + 36) - p(u - 6 < u < u + 6)}{2}$

$= \frac{99.73percent - 68.21percent}{2}$

$= \frac{31.46percent}{2}$

$= {15.73percent}$

Then, calculating,

$u - 26 = 515 - 2 \times 114 = 287$

And

$u + 26 = 515 + 2 \times 114 = 743$

Then,

$The \: Range = (287,743)$

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<u>1</u><u>5</u><u>.</u><u>7</u><u>3</u><u> </u><u>%</u>

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