3 years ago

What does 3.5 repeated equal to in fractions

Mathematics

1 answer:

solmaris [256]3 years ago

8 0

x=3.555555555

10x=35.55555555

subtract the first equation from the second

10x=35.55555555

- x=3.555555555

----------------------------------

9x = 32

x = 32/9 or 3 5/9

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12.20h - 7.15 = 90.45

zhannawk [14.2K]

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Digiron [165]

Well, what's the diffrence from 5/4 to 3/8?

$\bf \cfrac{5}{4}-\cfrac{3}{8}\qquad \stackrel{\textit{LCD is 8 clearly}}{\implies }\qquad \cfrac{10-3}{8}\implies \cfrac{7}{8}$

so, if we take 5/4 to be the 100%, what is 7/8 off of it in percentage anyway?

$\bf \begin{array}{ccll}
amount&\%\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
\frac{5}{4}&100\\\\
\frac{7}{8}&x
\end{array}\implies \cfrac{\quad \frac{5}{4}\quad }{\frac{7}{8}}=\cfrac{100}{x}\implies \cfrac{5}{4}\cdot \cfrac{8}{7}=\cfrac{100}{x}
\\\\\\
\cfrac{40}{28}=\cfrac{100}{x}\implies x=\cfrac{28\cdot 100}{40}$

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2 years ago

1. Suma a trei numere este 176. Al doilea numar este cu 28 mai mare decat al treilea, iar primul este egal cu diferenta acesteia

baherus [9]

Răspunsul corect va fi numărul 4. Supãrat dacã meu vorbind nu este cel mai bun, vorbesc limba engleza. Dacă ai nevoie de numere consecutive, sunt 99, 102 şi 103.

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2 years ago