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If A is the angle of depression, then tan(A) = height/distance, so distance = height/tan(A)

$${\mathtt{distance}} = {\frac{{\mathtt{250}}}{\underset{\,\,\,\,^{\textcolor[rgb]{0.66,0.66,0.66}{360^\circ}}}{{tan}}{\left({\mathtt{50}}^\circ\right)}}} \Rightarrow {\mathtt{distance}} = {\mathtt{209.774\: \!907\: \!794\: \!356\: \!960\: \!3}}$$

distance = 210 ft to the nearest foot.

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Same thing Melody:

I might have got to the end result quicker if I'd used your formulation though!

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In general (m² - n²) = (m + n)(m - n) so if m = n+1 we have 

(m² - n²) = ((n+1)² - n²) = (n+1 + n)(n+1 - n) = (m + n)*1  = m + n

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Divide 2210 by 44778 and multiply by 100 to turn it into a percentage.

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1.84*10^-6/23  →  184*10^-8/23  →  8*10^-8

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If you hover the cursor over the log button you will see other functions appear, one of which is ln, the natural logarithm.

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See my snarky post following the question. . . .

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$$\text { }\\
\noindent \text {This is a moronic attempt to post an iteration of a Bayesian network problem. }\\
\noindent \text {The solution is un\delta efined\.}\\
\text {I'm not wasting my time at reconstruction to show why.} \\
\text { }\\
\\$$

$$\setlength{\unitlength}{5cm}
\begin{picture}(0,0)

\put(0,-0.28){\line(1,0){2.0}}

\end{picture} \\

\text {No Reconstruction with a line through it.}\\$$

$$\\
\\
\text {The asker is too dumb to understand it, anyway.}$$

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help pls!!!!!!!!!!!!!!!!!

tan=Opposite side of a right angled triangle/Adjacet side of a right angled triangle

2.8284271247461901

Let's solve this one with elimination:

-3x+7y=-16

-9x+5y=16

Multiply the top equation by 3 so we can isolate the y's.

-9x+21y=-48.

-9x+5y=16.

Subtract: 16y=-64, y=-4.

Plug the y value into any of the original equations you like.

-3x-28=-16.

-3x=12.

x=-4.

The lines intersect at the point (-4,-4)

It's a number that has more than 2 factors.

4,9, and 27 are examples.

Just divide 1000 by 6 2/3, and that's your answer in seconds.

It will take him 150 seconds, or 2.5 minutes to run 1000 meters.

Add 7y to both sides: 15y-8=37.

Add 8 to both sides: 15y=45.

Divide both sides by 15, y=3.

Check: 8(3)-8=37-7(3), 24-8=37-21, 16=16

Multiply the numerators: 1*2=2.

Multiply the denominators: 7*3=21

(1/7)*(2/3)=2/21

-9.2-9.4=-18.6

-18.6-0.4=-19

The usual formula is

FV=PV(1+r)^n

fot this specific question

FV=100×(1+0.01)^5

FV=100×1.01^5

That is 1% interest per day for 5 days.

Use the foil method to expand (x-1)(x+2): x^2+2x-x-2=x^2+x-2.

x^2+x-2=18, subtract 18 from both sides so we can use the Zero Product Property:

x^2+x-20=0.

Factor: (x+5)(x-4)=0.

Use the zero product property so that x+5=0, and x-4=0.

x has two solutions, -5 and 4.

(W)hat is the angle when the opposite is .700 and the adjacent 4m(?)

opposite = 0.7m,     adjacent = 4m      angle(A) = ?

tan(A) = 0.7 / 4

A = 9.93⁰

Basic trigonometry:

https://www.youtube.com/watch?v=T8B8Tcz8kog

hi. i was the one who asked the question. thanks for the answere. what I was tring to find out was a forumla for % of growth for x number of times.

for example, if i have 100$ and it grows 1% EACH DAY in day one i have, 101$, in day two 102.01$, day three 103.0301.

But how i would write it in a formula? 100$ + 1% for 5 times. 

the answer is Y= 4x + 4

or you can do Y= 4x + 6

or you can just change the 2nd number

how can i calculate % growth per nr. of times? for example, i have 100$ and it grows 1% or 5 days. 

Umm    

12% pa calculated yearly is nominally 1% per month BUT if you are talking real rather than nominal rates then

$$\\(1.12)=(1+r)^{12}\\\\
(1.12)^{1/12} = 1+r\\\\
(1.12)^{1/12}-1 = r\\\\$$

$${{\mathtt{1.12}}}^{\left({\frac{{\mathtt{1}}}{{\mathtt{12}}}}\right)}{\mathtt{\,-\,}}{\mathtt{1}} = {\mathtt{0.009\: \!488\: \!792\: \!934\: \!583}}$$

So 12% compounded annually  is equal to approx  0.95 % compounded monthly.

Maybe that helps answer your question.  I am not really sure what you are asking :/