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3 years ago

Please help find the percent of decrease?!

Mathematics

1 answer:

Novosadov [1.4K]3 years ago

4 0

$\frac{40}{55} = \frac{x}{100} \\ \frac{4000}{55} = x \\ 72.73 = x \\ 100 - 72.73 = 27.27$
So the answer is 27.27% approximately

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Evaluate: <br> (4/25)^1/2 in fraction

algol13

Answer:

$\left(\frac{4}{25}\right)^{\frac{1}{2}}=\frac{2}{5}$

Therefore, option C is true.

Step-by-step explanation:

Given the expression

$\left(\frac{4}{25}\right)^{\frac{1}{2}}$

$\mathrm{Apply\:exponent\:rule}:\quad \left(\frac{a}{b}\right)^c=\frac{a^c}{b^c}$

so the expression becomes

$\left(\frac{4}{25}\right)^{\frac{1}{2}}=\frac{4^{\frac{1}{2}}}{25^{\frac{1}{2}}}$

$=\frac{4^{\frac{1}{2}}}{25^{\frac{1}{2}}}$

$=\frac{2}{25^{\frac{1}{2}}}$

$=\frac{2}{5}$

Hence,

$\left(\frac{4}{25}\right)^{\frac{1}{2}}=\frac{2}{5}$

Therefore, option C is true.

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x + 7 ≠ 0 |subtract 7 from both sides

x ≠ -7

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Answer:

The two column proof can be presented as follows;

Statement ${}$ Reason

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4. ΔURS ≅ ΔSTU ${}$ By SAS rule of congruency

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Step-by-step explanation:

Given that the side RU, the angle ∠SRU and the side RS of triangle ΔURS are congruent to the side ST the angle ∠STU and the side UT of triangle ΔSTU, then ΔURS is congruent to ΔSTU, by the Side-Angle-Side (SAS) rule of congruency

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