#(direct variation)Do I need to get the square root of e=625 or only the square root of e=64?

4 messages · Page 1 of 1 (latest)

turbid arrow
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If D varies directly with the square root of e and D=424 when e=64, what is the value of D when e=625?

terse berryBOT
dapper cairn
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Hi @turbid arrow the answer is 1325 = 53 * 25 as 424 = 53 * 8 and 64 = 8 * 8 as well as 625 = 25 * 25

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In this context direct variation of D from square root of e means that $D = k \cdot \sqrt{e}$ for some $k$