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2.5

I'm a bit rusty though so I'd recommenf checking the second one.

There are two formulas I know of. Multiply the base and the height together, then divide by 2, or take the two sides that create an angle, multiply them and then multiply them by the sine of the angle they create.

Cphill... Wouldn't the next one be like 678 i think?

Thanks for that addition Geno. That was a possiblity I did not consider. 

If the question is:  How do I enter infinity into my calculator? 

Just answer a ridiculously large number for infinity, such as 999999,

The answer my calculator gives for normalcdf(80.75, 999999, 74, 4) is 0.04575 (approximately).

Adonai is absolutely correct if you have a discrete distribution with weight losses of either 6 or 7 or 8 or ... 12 pounds.

He also correctly states that you need to alter your answer if the losses have a step of 2 pounds each, such as either 6 or 8 or 10 or 12, or 1/2 pound each, such as either 6 or 6 1/2 or 7 1/2 or ... or 12 pounds. And you solve these cases in exactly the way that he solved it for a step of 1 pound.

However, if you have a continuouts distribution, one that allows every possible loss (using every possible fraction) between 6 and 12 pounds, then find the distance between 6 and 12 pounds (12 - 6 = 6) and find the distance between 8 and 11 (11 - 8  =  3), then divide this sub-distance by the total distance:  3 / 6  =  1/2   =  0.50, giving a probability of 0.50.

If you do second and cos, it will pop up an inverse cos or cos^-1. Insert the .348 to get your angle.

\(2\times{(-3)}^{3}+4\times{(-3)}^{2}\)

\(2\times-27+4\times{(-3)}^{2}\)

\(2\times-27+4\times9\)

\(-54+4\times9\)

\(-54+36\)

\(-18\)

Assuming you are trying to simplify it, you first do the exponents in each piece, so -3^3 and -3^2, and you take those answers and multiply them by their respective numbers outside the parenthesis. I believe if done correctly your final answer should be -18.

Peas - $0.99/lb or Peas - $4.59/5lbs

Take $4.59 and divide it by 5 to get the price per pound.

$4.59/5 = $0.918

91.8¢/lb vs. 99¢/lb.  Which is the better deal?

1/4 as a decimal... you basically divide 1 by 4, the answer is .25

Is that a matrix? If it is you can just multiply the scalar by all the terms inside of it.

Anyone has the potential to be "smart" as long as said person is willing to put in the effort to achieve the wanted level of inteligence. If Megan is willing to study and research whatever topic she wants to be considered "smart" in, she will.

These two answers are for x as you have it written down:

(ln(x)/0.2198)+1/(125.6*x)+6.88737578=0

x = 0.000259537

x = 0.218305

But if you meant to write it like this:

(ln(x)/0.2198)+1/[(125.6*x)+6.88737578]=0, then the value of x is:

x = 0.99834

What are the size of the tiles?

Also if you have a TI 84 or above there is a key under the math button. I believe it's the second from the bottom. If you have below a TI 84, you must use the change of base property.

Nevermind listen CPhill :) 

Uh in a calculator I'm not sure, I've always been bad at logarithms haha.

Type this :

log ( a , b)     where a is the number you're taking the log of [ the antilog] and b is the base

For instance....for log₂ 8

log ( 8, 2)   will return "3"

Why hello there!

6.79 / 40  = about 16.98 cents per oz

3.60 / 24  =  15 cents per oz

Let me divulge further into what Adonai stated. 

You start with 

9.50x + 60 = 460

Subtract 60 from both sides to get:

9.50x = 400

Then isolate x by dividing 9.50 from both sides:

x ≈ 42.10

With all due respect don't you think that's a bit extensive?

Well to make it as simple as possible we'll assume that distribution is one pound. So out values are 6, 7, 8, 9, 10, 11 and 12. A total of 7 possible amounts. Out of those 7, 4 of them are between 8 and 11(8, 9, 10 and 11). Therefore the probability of losing between 8 and 11 points is 4/7. This would change if your distribution was say 2 pounds, or half a pound.