All Answers

+33663

You're welcome!

AlanJul 11, 2014

+11912

i have used a tablet but never required to upload these kinda thing(becoz i just played games on it)

so ive never tried it!let me think mayb i get a solution!

rosalaJul 11, 2014

+130517

Was that the issue???

CPhillJul 11, 2014

+546

thank you!

NataszaaJul 11, 2014

+130517

The only other thing I see, Nataszaa, is that the ".2" inside is "2/10' = "1/5' and we would have a radical in the denominator..........

If so...let's see what we can do

(.6 lx³l y)√(.2 y) = (.6 lx³l y)√[(2 y)/ 10] = (.6 lx³l y)√(y/5)

We can multiply the numerator and denominator inside the square root by 5 and get

(.6 lx³l y)√[(5 y)/25] = [(.6 lx³l y)/5]√(5 y) = (.12 lx³l y)√(5 y)

See if this is correct!!!

CPhillJul 11, 2014

+33663

tan(45°) is 1, so the vertical line above Z must be of length 9 for this to be true. This means WX also has length 9. The line VZ is √(9²+9²) = 9√2 from Pythagoras. The length of the perimeter is therefore given by:

$${\mathtt{9}}{\mathtt{\,\small\textbf+\,}}{\mathtt{6}}{\mathtt{\,\small\textbf+\,}}{\mathtt{9}}{\mathtt{\,\small\textbf+\,}}{\mathtt{6}}{\mathtt{\,\small\textbf+\,}}{\mathtt{9}}{\mathtt{\,\times\,}}{\sqrt{{\mathtt{2}}}} = {\mathtt{42.727\: \!922\: \!061\: \!357\: \!855\: \!4}}$$

or 42.73 to two decimal places.

AlanJul 11, 2014

+8262

A horizontal rectangular bar graph.

DragonSlayer554Jul 11, 2014

+52

I'll send him a message saying he's got a mistake in the book for future editions and see what he says.

You're right sometimes there are mistakes when so much data is being put on paper.

I'm principally interested in this because i'm into amplifiers and there's a lot of calculations for gain stages,

rectification and all the rest of it. Anyway in reading a couple of my textbooks i came across some sums that i

looked at from every angle and they just didn't make sense! So i contacted the author and he said i was right

that the book had a typo in there! So it might very well be that.

Thanks for helping me.

EquationJul 11, 2014

#21

+8262

I now get it.

DragonSlayer554Jul 11, 2014

+11912

What kind of bar graph!

rosalaJul 11, 2014

+33663

+10

The whole circumference is given by 2*pi*25. The shorter arc length from B to C is the fraction 144/360 of the whole circumference (because there are 360° needed to go all the way around the circumference, and you just want to go 144° around), namely:

$${\frac{{\mathtt{2}}{\mathtt{\,\times\,}}{\mathtt{\pi}}{\mathtt{\,\times\,}}{\mathtt{25}}{\mathtt{\,\times\,}}{\mathtt{144}}}{{\mathtt{360}}}} = {\mathtt{62.831\: \!853\: \!071\: \!795\: \!864\: \!8}}$$

or ≈ 62.8

AlanJul 11, 2014

+8262

8.3 GB=8300 MB

8300.0+15.2=8315.2 MB is the answer.

DragonSlayer554Jul 11, 2014

+33663

+13

I've just looked in the book myself. The answers given are clearly wrong: