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u stink mr pupil

GuestNov 13, 2013

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GuestNov 13, 2013

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y2-y1 and x2-x1..... 1-1 over 4+1

GuestNov 13, 2013

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Look It Up On A Caculator !

GuestNov 13, 2013

+118727

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More information is needed

MelodyNov 13, 2013

+118727

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How do you evaluate ln(lne^(e)^(100))?

=ln[e^100*lne]

=ln[ (e^100)*1]

=ln e^100

=100 * lne

=100

MelodyNov 13, 2013

+118727

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what is sin^-1(sin(4pi/5))

4pi/5 is in the second quadrant and sine is positive there

so sin(4pi/5) = sin (pi/5)

and sin^-1(sin(pi/5)) = pi/5

MelodyNov 13, 2013

+30

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never mind i figured it out it came out to 29.9
sorry about that.

piconjoNov 13, 2013

Nov 12, 2013

+118727

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consider the region bounded by f(x)= -x^2+x+6 and the x-axis. partiton into n rectangles of equal width, using their right endpoints to find their height. What is the summation that gives the area of these n rectangles?

I experimented with a much simpler problem to start with.
I let f(x)=2x
and found the area from x=2 to x=7 (above the x axis) using 4 strips
Then I went on to find n strips
then I was ready to tackle your problem

f(x)=-(x-3)(x+2) This is a concave down parabola that crosses the x axis at 3 and -2

The width of each strip is (3--2)/n = 5/n (where n is the the number of rectangles)
The right end point of each rectangle is x= -2 + (5/k) Where k can be any integer from 1 to n
The height
h = -(-2 + (5/k)-3)(-2 + (5/k)+2)
h = -(-5+(5/k))(5/k)
h = 5/k (5-5/k)

Area of each rectangle = 5/n * 5/k (5-5/k)

Area = The sum of k from 1 to n of [ 5/n * 5/k (5-5/k) ]

Area = The sum of k from 1 to n of [ (25/n*k) (5-5/k) ]

I think this is right but you had best check it very carefully.

I haven't actually plugged any numbers in to check that it works but if you divide the area into five rectangles you could see if it works for that quite easily.
If it doesn't work or you get stuck, post again, I should see you post easily enough.

MelodyNov 12, 2013

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GuestNov 12, 2013

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GuestNov 12, 2013

+30

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I worked on it and came out with the same answer of 9300nm.
Thanks

piconjoNov 12, 2013

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First get rid of the -3 by adding it to the other side so it becomes:
1/2x > -7

Next to find one x we double the 1/2 like to get:

1x > -14

I hope this helps.

GuestNov 12, 2013

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GuestNov 12, 2013

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Doctors say by taking steriods depending on your normal size, it can enlarge up to 2 inches maybe 3 inches thick and 14 inches long

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GuestNov 12, 2013

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Your question needs to be more accurate and make more sense. Do you mean what number could possibly go in evenly that is between 67 and 113?

GuestNov 12, 2013

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1E+12 this is what it give me !

GuestNov 12, 2013

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Math is only hard to those who have no desire with it. If you grow up careless without trying math or having such no interest then it is hard to do, if you study and actually try/practice then math will give you no troubles Practice akes perfect, you need math throughout your whole life and some people will do it for school then forget about it. you can be one of those people who use it now but then as an adult don't want to have nothing associated with it. Your life, live as what you please and do what makes you happy

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GuestNov 12, 2013

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If you're smart enough to write the question then you are smart enough to answer an easy question that I bet a 2 year old who practices alot could possibly answer. The answer is 2 Studying will help you tons !

GuestNov 12, 2013

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5(x-3)-2=23
5x-15-2-23=0
5x-40 = 0

La ecuacion es: 5x-40 = 0

Y si quieres despejar X, entonces:
5x =40
x=40/5
x=8

GuestNov 12, 2013

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]This question is rhetorical . and doesn't make sense, but i give you credit for it was funny !

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GuestNov 12, 2013

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GuestNov 12, 2013

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You guy's are pathetic -.- Probably never even met nor probably even the same s*x either. This is a math website, you want to talk about "Hooking up" then go to a hotel website or travel agency and meet and get this over with .-. Don't need to see this ! This is ridiculous and makes you look bad.....Solve your s**t and move one Little kids now at days.....

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GuestNov 12, 2013

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The moon isn't made of cheese, it is made of rock

GuestNov 12, 2013

0

This question doesn't make any sense?

GuestNov 12, 2013

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