3 years ago

How many points do you need to know to draw the graph of a direct proportionality? which are?

Mathematics

1 answer:

Mamont248 [21]3 years ago

6 0

Answer:

The graph states, therefore, that A is directly proportional to B. It also states that B is directly proportional to A,

Step-by-step explanation:

I tried kiddo:)

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The semi circle and isosceles triangle have the same base AB and the same area. Find angle x. Show workout.

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$r= \frac{AB}{2} \\ \\A_{semi\:circle }=\frac{r^2\pi}{2} \\ \\A_{triangle}=A_{semi\:circle }=\frac{r^2\pi}{2} \\ \\A_{triangle}= \frac{2r\times h}{2} =rh \\ \\\frac{r^2\pi}{2}= rh \\ \\h=\frac{r\pi}{2} \\ \\ \tan{x}= \frac{h}{r} = \frac{\frac{r\pi}{2}}{r} =\frac{\pi}{2} \\ \\x=\arctan{\frac{\pi}{2}}
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\\x \approx 57.52^o$