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levacccp [35]
3 years ago
9

If y varies directly as x, and y = 25 when x = 5, find y when x = 25.

Mathematics
2 answers:
s344n2d4d5 [400]3 years ago
8 0
It would be 125 so A
dezoksy [38]3 years ago
5 0

\bf \qquad \qquad \textit{direct proportional variation} \\\\ \textit{\underline{y} varies directly with \underline{x}}\qquad \qquad  y=kx\impliedby  \begin{array}{llll} k=constant\ of\\ \qquad  variation \end{array}\\\\ \rule{31em}{0.25pt}\\\\ \textit{we also know that } \begin{cases} y=25\\ x=5 \end{cases}\implies 25=k5\implies \cfrac{25}{5}=k \\[2em] 5=k\hspace{20em}\boxed{y=5x} \\[2em] \textit{when x = 25, what is \underline{y}?}\qquad y=5(25)\implies y=125

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olganol [36]

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garik1379 [7]

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TW UV

If an ARC subtends an angle in the circle (on the opposite side of the circumference), the measure of that angle will be HALF of the Arc. In other words, the Arc's measure will be DOUBLE of that angle.

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Now, looking at the image, we can see that:

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