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No, it ends in ,578

I got a good saying about a pickle, it goes like this.... I will give YOU a nickel if you tickle my pickle........

Depends on how much you give the pickle to eat.

VOTE FOR TRUMP

Thank you, Alan.

t, the time, is the independent variable and f, the future value, is the dependent variable.

The 6 multiplies both terms within the brackets.  6(1 - x/2)   →   6*1 -  6*x/2   →   6 - 3x

So 2 + 3x - (6 - 3x)  →  2 + 3x - 6 + 3x  →  -4 + 6x

If this is greater than 0 then:   -4 + 6x > 0    →     6x >  4    →    x > 4/6  or  x > 2/3

.

arclength = (30/360)*2*pi*7.4*10^8  →  3.9*10^8  This is correct to one decimal place.

 It is 4*10^8 to one significant figure.

Let the total distance be =D

1/3D.2/3D =9

2/9D=9

D=9.9/2

D=40.5 Km. Total diseance

40.5 1/3=13.5 Km by bus

27.2/3 =18 Km by cycle

9 Km by foot.

They are approximations so how would you try proving rationality? 

I agree that is mind blowing melody just not as mind blowing as I can imagine someone wuth that amount of money. Back to the ball question, imagine if you actually tried recording that many combinations to find one without repetition

d2 + 7/3d = 2

Need to find the nature of its roots.

\(d^2+\frac{7}{3}d=2\\ d^2+\frac{7}{3}d-2=0\\ \mbox{It is easiest to multiply this by 3 to get rid of the fraction}\\ 3d^2+7d-6=0\\ \)

Now the nature of the roots is determined by the discriminant.  That it the bit under the square root in the quadratic formula.

The symbol for the discriminant is a triangle.

\(\triangle=b^2-4ac\\ \triangle=7^2-4*3*-6\\ \triangle=49+72\\ \triangle=121\\ \)

Now 121 is a perfect square so this means there will be two rational roots :)

If you want more explanation then ask for it :)

90$ on food per week = 90x (x is weeks) 

90x/400 = your fraction, x100% for percentage.

(2 = x)

180/400 = .45 * 100% = 45%

no, those are approximations

1=1

13 hundredths = .13

.1 = tenth (10 tenths = 1)

.01 = hundredth (100 hundredths = 1)

1 & .13 = 1+.13  = ??? x.xx

Actually it is probably more than that because sometimes the bag as 20 b***s and sometimes it has 21 b***s.

I was only looking at the combinations of 21 b***s ://

There are going to be a lot of (wipe out)  stars in this answer!     LOL

7kg @ 8pm  m = minutes h = hours

20m/kg*7kg = 140m + 90m + 20m = 250m.   250m*1/60h/m= 4 hours & 10 minutes. 8pm - 4hours & 10 minutes = 3:50pm

or:

let mass m = 7kg, time final Tf = 8pm where 8pm is 1200 minutes, x = 20 minutes per kilogram (minutes/kg)

Time Tf (final) = 8pm = 20 hours * 60 minutes/hour = 1200 minutes.

To (initial) = Tf-xm+90+20 m=7kg

To = Tf -  (20 minutes/kilogram*7 kilogram) + (90+20)

To = Tf - 140 minutes + 110 minutes

To = Tf - 250 minutes

To = 1200 minutes -250 minutes = 950 minutes

950 minutes * (1 hour / 60 minutes) = 15.83333

15 hours = 3 pm,

.83333 * (60 minutes)) = 50 minutes

[3:50pm]

Hi guest.  It is mind blowing!

Here is something else that might b**w you mind.Say your mum gives you 1c allowance for the first week of January.

That is pretty useless you say - might as well throw it away!

BUT

then each week after that she gives you double as much as she geve you last times.

So in week 2 you get 2c

week3         4c

week 4        8c

You have still only got a total of 1+2+4+8 = 15c

week 5       16c

week 6        32c

week 7       64c

week 8       $1.28

week 9       $2.56

by the time you get to the end of the year - week 52 you will get     2^51 approx    2.2518*10^15 cents

That is     week 52          $ 22,518,000,000,000

How is that for mind blowing :)

Mind blown lol

thank you everyone..

Hi NavySealFleetAdmiral  Welcome to web2.0calc  forum      

Your question looks interesting :)

When mineral deposits formed a coating 1 mm think on the inside of a pipe, the area through which which can flow was reduced by 20%. Find the original inside diameter of the pipe.

Let the original radius be r

\(Original \;Area =\pi r^2\\ Reduced\; Area =\pi(r-1)^2\\ 100\%-20\%=80\%\\ 80\%\;of\;\pi r^2=\pi(r-1)^2\\ 0.8*\pi r^2=\pi(r^2-2r+1)\\ 0.8 r^2=r^2-2r+1\\ 0.2r^2-2r+1=0\\ r^2-10r+5=0\\ r=\frac{10\pm\sqrt{100-20}}{2}\\ r=\frac{10\pm\sqrt{80}}{2}\\ r=\frac{10\pm 4\sqrt{5}}{2}\\ r=5\pm 2\sqrt{5}\\ r\approx 5\pm 4.47\\ BUT\;r>1\\ r\approx 9.47\;mm\\ \)

Check:    0.8*pi*9.47^2 = 225.3926852858567108

pi*8.47^2 = 225.3806844019199977

Yes close enough :)

Three of the sides are recatngles.  You work out the area for each of those.

The two ends are matching triangles so you work out the area for one of those and double it.

Now add the areas for the 5 sides all together and you have the surface area :)