asinus

Entschuldigung!

-6/11-(-1/4)

\(\large -\frac{6}{11-(-\frac{1}{4})}=-\frac{6}{11\frac{1}{4}}=-\frac{6}{\frac{45}{4}}=-6\times{\frac{4}{45}}=-\frac{8}{15}\)

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ich kaufe 2 iPhone für 50 euro, ich verkaufe sie für 100 euro. wie viel gewinn hat man dann?

Du verkaufst sie für 100 €.   ⇒  Gewinn = 0 €.  Kein Geschäft gemacht !

Du verkaufst sie für je 100 €.   ⇒  Gewinn = 2 mal 50 € = 100 €. 

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Wie stelle ich diese Formel na R1 um R=R1×R2/R1+R2

\(R=R_1\times\frac{R_2}{R_1}+R_2\)   multlpliziere und addiere

\(R=2R_2\) 

\(R_1\in \mathbb R \)

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whhy is teh skys bbluhes

Read here.

what is -3x*-76x

You typed.

\(Please \ name \ the \ exponent \ of\ x^?.\)

We have (5X10^-4)(3X10^-10) under a square root sign (and then further calculations to complete the formula).  We are getting the correct answer but with the decimal point way off.  What do I need to know about negative exponents under square root signs? 

\(\sqrt{{(5\times10^{-4})}\times(3\times10^{-10})}\)

\(=\sqrt{0.0005\times 0.0000000003}\)

\(=\sqrt{0.000 000 000 00015}\)

\(=3.60555127546\times 10^{-7}\)

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(0.0167 cm^-1)^-1

\(\large o.k.\)

\(\large(0.0167cm^{-1})^{-1}=(\frac{0.0167}{cm})^{-1}=\frac{cm}{0.0167}=59.88\ cm\)

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Here it is not a right triangle.

How do I find the perimeter C of this fountain?..

A fountain is made up of two semicircles and a quarter circle.

The diameter of the semicircles is d = 20ft. Find the perimeter of the fountain. Round your answer to the nearest tenth.

\(\large C=\frac{2d\pi}{4}+2\times\frac{d\pi}{2}=\frac{d\pi}{2}+d\pi\) 

Quarter circle + two times semicircle

\(\large C=20ft\times\frac{\pi}{2}+20ft\times \pi=20ft\times\frac{3\pi}{2}\)

\(\large C=94.248ft\)

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