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3 years ago

5 (n+2) = 3/5 (5+10n) solve this

2 answers:

4 0

$5(n+2)=\frac{3}{5}(5+10n) \\\\ 5n+10= \frac{3}{5}*5(1+2n) \\\\ 5n+10=3(1+2n) \\\\ 5n+10=3+6n \\\\ 5n-6n=3-10 \\\\ -n=-7 \\\\ \boxed{n=7}$

mars1129 [50]3 years ago

3 0

$5(n+2)=\frac{3}{5}(5+10n)\\\\5\times n+5\times2=\frac{3}{5}\times5+\frac{3}{5}\times10n\\\\5n+10=3+3\times2n\\\\5n+10=3+6n\ \ \ \ \ |subtract\ 10\ from\ both\ sides\\\\5n=-7+6n\ \ \ \ \ |subtract\ 6n\ from\ both\ sides\\\\-n=-7\\\\\boxed{n=7}$

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Simplify the expression below. -15r + 3(2s - 4r)

Sergio039 [100]

-15r + 3(2s - 4r)
=-15r + 6s - 12r
= -27r + 6s
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= 6s - 27r

5 0

3 years ago

PLS HELPP!! thank you

VashaNatasha [74]

Answer:

$20.71/ $ft^{2}$

Step-by-step explanation:

290 ÷ 14 = 20.71 (rounded)

3 0

3 years ago

The loudness, L, measured in decibels (Db), of a sound intensity, I, measured in watts per square meter, is defined as L=10logl/

matrenka [14]

Answer:

The the loudness heard by the mower will be 4 times the loudness heard by the Brandon.

Step-by-step explanation:

The least intense sound a human ear can hear , $I^o=10^{-12} dB$

The sound intensity level that Brandon can hear ,I= $10^{-10} dB$

$L=10\log\frac{I}{I^0}=10\log\frac{10^{-10} dB}{10^{-12}dB}=20$

The sound intensity level of the mower that Ahmad ,I'= $10^{-4} dB$

$L'=10\log\frac{I'}{I^0}=10\log\frac{10^{-4} dB}{10^{-12}dB}=80$

So, the:

$\frac{L}{L'}=\frac{20}{80}=\frac{1}{4}$

$L'=4\times L$

The the loudness heard by the mower will be 4 times the loudness heard by the Brandon.

7 0

4 years ago

Read 2 more answers

The table below shows the gender in amount of time each person surveyed exercises each day. What is P(do not exercise male)?

slava [35]

Total people = male + female = 82+18+94 +46= 240

People that do not exercise and is male: 18

To find the probability divide the number of people that do not exercise and are male, by the total number of people.

18/240 = 0.075

P = 0.075

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1 year ago

2(y-3)-y=-1 please help me with this one

emmasim [6.3K]

Y=5 is your answer. Hope this helps :)

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3 years ago