asinus

x^-2 mal (-1) = x^2 ?

\(x^{-2}\times \left(-1\right) =-x^{-2} \)

Der Exponent wird hier nicht beeinflusst.

Fast alles, was mit der Potenzrechnung zusammen hängt,

steht im link:

4*(3x+5)-2*(2x-7)

\(\) \(4\left(3x+5\right)-2\left(2x-7\right) \)

= \(12x+20-4x+14 \) 

= \(8x+34\) 

Nullstelle : y = 0; x =  -4,25

asinus :- )  !

If the cross-sectional area, temperature, and material type of a conductor remains fixed, but the length of the conductor is tripled, what happens to the conductor resistance?

He tripled

1. A ceiling fan can rotate 150.5 times per minute. The fan rotated a total of 2,426.06 times. Which of the following is true?

\(t = Z/n\)

\(t = \frac{2426.06}{150.5min^{-1} } \) \(\times \frac{60s}{min}\)

\(t=967.2s \)

\(The \ fan \ was \ 967.2 \ seconds \ in \ operation. \ This \ is \ true!\)

(x-1)/2+1=(x+1)/4

\(\frac{x-1}{2} +1= \frac{x+1}{4}\)

\(\frac{2x-2+4}{4}=\frac{x+1}{4} \) 

\(2x+2=x+1\) 

\(x=-1\) 

\(Sample:\)

\(\frac{-1-1}{2} +1= \frac{-1+1}{4}\) 

\(0=0\)

how do you do .72 repeated into a simplifyed fraction?

\(0.72= \frac{72}{100}=\frac{18}{25} \)

\(\)

Thanks Alan!

2-4*3^-1-6*3^-2 this is = 0 but why? can someone explain?

\( 2-4\times \frac{1}{3} -6\times \frac{1}{3^{2} } \)

= \(2-\frac{4}{3} -\frac{6}{9}\)

= \(2-\frac{18}{9} \)

= \(2-2\)

= \(0\)

\( More \ does \ not \ remain. \) 

asinus :- )  !

How would you solve this? -15-6c+3b-6c+9-2b

\(\)

\(-15 - 6c + 3b - 6c + 9 - 2b = - \ 6 + b -12c \)

tan A=0.2867

tan A = 0.286745385759

A = atan 0.286745385759

A_deg = 16°

A_rad = 0.27925