3 years ago

in a box of 36 pencils 20 are sharpened what is the ratio of sharpened pencils to unsharpened pencils

Mathematics

1 answer:

OleMash [197]3 years ago

4 0

Answer:

20 : 16

or if you have to reduce then the answer is 5 : 4

Step-by-step explanation:

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What is the slope of a trend line that passes through the points (–3, 3) and (18, 26)? StartFraction 15 Over 29 EndFraction Star

Alik [6]

Answer:

23/21

Step-by-step explanation:

The slope is computed from ...

m = (y2 -y1)/(x2 -x1)

For the given points, the slope is ...

m = (26 -3)/(18-(-3)) = 23/21

The slope of the trend line is 23/21.

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3 years ago

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2 years ago

A circle with a circumference of 51 inches to find the area

Kaylis [27]

$\textit{circumference of a circle}\\\\ C=2\pi r~~ \begin{cases} r=radius\\[-0.5em] \hrulefill\\ C=51 \end{cases}\implies 51=2\pi r\implies \boxed{\cfrac{51}{2\pi }=r} \\\\[-0.35em] ~\dotfill\\\\ \textit{area of a circle}\\\\ A=\pi r^2\qquad \implies A=\pi \left( \cfrac{51}{2\pi } \right)^2\implies A=\cfrac{51^2}{2^2\pi }\implies A\approx 206.98$