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The sum of the angles of a triangle is 180°.

So a + b + c = 180°   --->   70° + 20° + c = 180°   --->   90° + c = 180°   --->   c = 90°

Do you mean  c² + b² ?

If so:  (-2)² + (-3)²  =  4 + 9  =  13.

There are 16 marbles, 4 of them blue.

The probability of getting a blue marble on the first draw is 4/16.

Now there are 15 marbles, 3 of them blue.

The probability of getting a blue marble on the second draw is 3/15.

These are independent events, so the total probability is found by multiplying the two probabilities together:  4/16 x 3/15  =  1/20.

A  =  P(1 + r)ⁿ

A = final amount

P = beginning amount = $2000.00

r = yearly interest rate as a decimal = 0.12

n = number of years = 10

A  =  2000(1 + 0.12)¹⁰  =  $6211.70

Let  t  represent the number of hours that Brad drove.

Since Athena started 2 hours earlier, she drove  t + 2 hours.

Distance  =  rate x time

Brad's distance:  60t

Athena's distance:  30(t + 2)

Assuming that they started in the same place, when Brad catches Athena, they both will have driven the same distance:

     60t  =  30(t + 2)

     60t  =  30t + 60

     30t  =  60

         t  =  2 hours (after Brad started, so 1:00 pm)

Hahahahahahahahahahahahahah 9

3p - 4/3  <  -1/(1/6)

Since  -1 / (1/6)  =  -1 x (6/1)  =  -1 x 6  =  -6

3p - 4/3  <  -6

Multiply each term by 3:

9p - 4 < -18

9p  <  -14

p  <  -14/9

Please make your question clearer!. Do you mean how much money you have to have today to get $2000 in 10 years? Or, how much money you have to deposit every year to get $2000 in 10 years?.

Square root of x  --->   x^1/2

Fifth root of x  --->   x^1/5

( x^1/2 / x^1/5 )^1/3

Since  inside the parentheses is a division problem, subtract the exponents:

            1/2 - 1/5  =  3/10:

=  ( x^3/10 )^1/3

Since this is an exponent to an exponent, multiply the exponents:

=  x^{3/10 x 1/3}  =  x^1/10     or the tenth root of x

Yes; you can have 10 to an exponent of any number.

To get a decimal approximation, use a calculator; however, it can be reduced (a little):

10^2.5  =  10^{2 + 0.5}  =  10² x 10^0.5  

Since 10² = 100 and 10^0.5 = 10^1/2  =  √10

10^2.5  =  100√10

I don't like to get things so easily...I like to earn them......that's why I drink blood straight from humans ....otherwise stealing blood is no big deal! 

Well if you didn't notice , I said if you can get a machine that can filter blood then I can think of " tasting" you! 

Well I don't care being a beautiful wolf but I do care for my money that will waste on getting those long wolf-y hair off my body!so .......

Btw to tin: I like FarmVille but after you earn lots of money it gets boring so I don't really open my Facebook account anymore....it's kinda got boring! 

The answer is 6

$${\mathtt{3}}{\mathtt{\,\times\,}}{\mathtt{x}}{\mathtt{\,-\,}}{\mathtt{5}}{\mathtt{\,\times\,}}{\mathtt{x}} = {\mathtt{10}} \Rightarrow {\mathtt{x}} = -{\mathtt{5}}$$

Easy x=-5 y appears in a xyz coordinate equations like

$${\mathtt{3}}{\mathtt{\,\times\,}}{\mathtt{y}}{\mathtt{\,-\,}}{\mathtt{34}}{\mathtt{\,\times\,}}{\mathtt{x}} = {\sqrt{{\mathtt{4}}{\mathtt{\,\times\,}}{\mathtt{x}}{\mathtt{\,-\,}}{\mathtt{z}}}} \Rightarrow {\mathtt{y}} = {\frac{\left({\sqrt{{\mathtt{4}}{\mathtt{\,\times\,}}{\mathtt{x}}{\mathtt{\,-\,}}{\mathtt{z}}}}{\mathtt{\,\small\textbf+\,}}{\mathtt{34}}{\mathtt{\,\times\,}}{\mathtt{x}}\right)}{{\mathtt{3}}}}$$

$${{\mathtt{\pi}}}^{{\mathtt{x}}} = {\mathtt{74}} \Rightarrow {\mathtt{x}} = {\frac{{ln}{\left({\mathtt{74}}\right)}}{{ln}{\left({\mathtt{\pi}}\right)}}} \Rightarrow {\mathtt{x}} = {\mathtt{3.759\: \!895\: \!802\: \!851\: \!791\: \!1}}$$

Nice and hard one difficulty:harder 

$${\mathtt{\pi}} = {\mathtt{3.141\: \!592\: \!653\: \!589\: \!793\: \!2}}$$

Here is some digits of pi and pi has 10000 digits on it

$${{\mathtt{7}}}^{{\mathtt{x}}}{\mathtt{\,\small\textbf+\,}}{{\mathtt{7}}}^{\left({\mathtt{x}}{\mathtt{\,-\,}}{\mathtt{2}}\right)}{\mathtt{\,\small\textbf+\,}}{\mathtt{7}}{\mathtt{\,\times\,}}\left({\mathtt{x}}{\mathtt{\,\small\textbf+\,}}{\mathtt{1}}\right) = {\mathtt{7}}{\mathtt{\,\times\,}}{\mathtt{393}} \Rightarrow {\mathtt{x}} = {\mathtt{\,-\,}}{\frac{\left({\mathtt{50}}{\mathtt{\,\times\,}}{{\mathtt{7}}}^{\left({\mathtt{x}}{\mathtt{\,-\,}}{\mathtt{2}}\right)}{\mathtt{\,-\,}}{\mathtt{2\,744}}\right)}{{\mathtt{7}}}}$$

Easy one and difficulty:normal 

*frees 7UP

now leave, go with Rosala, and most importantly, NEVER RETURN!!!

(I erased the 7UP Formula from his memory chips so he wouldnt remember what the formula was)

just go with hi on the Blood bank Rosala, im sure youll have a fun time!

to dragonlance:no i never played boring peaceful games

games involving death or destruction is awesome

This-------->$${{\mathtt{5}}}^{{\mathtt{2}}}{\mathtt{\,-\,}}{\mathtt{15}} = {\mathtt{10}}$$

math is around us like 1x-2=4 so do you find mathematics boring 

you will be smart like einstein

$${\mathtt{5}}{\mathtt{\,\times\,}}\left({\mathtt{2}}{\mathtt{\,\times\,}}{\mathtt{x}}{\mathtt{\,-\,}}{\mathtt{6}}\right) = {\mathtt{3}}{\mathtt{\,\times\,}}{\mathtt{x}}{\mathtt{\,-\,}}{\mathtt{2}} \Rightarrow {\mathtt{x}} = {\mathtt{4}}$$

Angelo

Like melody said

$${\frac{{\mathtt{5}}}{{\mathtt{4}}}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{5}}}{{\mathtt{4}}}} = {\frac{{\mathtt{5}}}{{\mathtt{2}}}} = {\mathtt{2.5}}$$

Do you want this solution explained ?

s must be a value and this must be an example to you

$${\mathtt{s}}{\mathtt{\,\small\textbf+\,}}{\mathtt{6}} = {\mathtt{12}} \Rightarrow {\mathtt{s}} = {\mathtt{6}}$$

Yes this is algebra.

When ever you use letters inplace of numbers it is algebra :)

Big smile :D