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Even if it is radians or degrees, you need to put in the calculator, acos(1.030) then you find what theta is and solve from there.

Thank you so much!! 

Yes I understand.

Thanks Radix :)

assuming you're solving for x, the problem can be rewritten as

$${\mathtt{2}}{\mathtt{\,\times\,}}{\mathtt{x}}{\mathtt{\,\small\textbf+\,}}{\mathtt{22}} = {\mathtt{0}}$$

in which case you should start with moving 22 over by subtracting from both sides.

$${\mathtt{2}}{\mathtt{\,\times\,}}{\mathtt{x}} = -{\mathtt{22}}$$

and then divide both sides by 2.

$${\mathtt{x}} = -{\mathtt{11}}$$

hope this helps!

Hello Melody, please look my last answer.

hi,

so you know x is 22 in this problem, all you have to do is substitute it in.

2x+50

2*(22) + 50

44+50

94

so your answer after substitution and simplification is 94!

hope this helps!

the answer is 94

I don't understand your answer Radix   

v=u+at

v=50+4*10 = 90  what are the units?    Maybe m/s

2ln10+log20/log121-ln11 equals -18.743, why and how?

$${\mathtt{2}}{\mathtt{\,\times\,}}{ln}{\left({\mathtt{10}}\right)}{\mathtt{\,\small\textbf+\,}}{\frac{{log}_{10}\left({\mathtt{20}}\right)}{{log}_{10}\left({\mathtt{121}}\right)}}{\mathtt{\,-\,}}{ln}{\left({\mathtt{11}}\right)} = {\mathtt{2.831\: \!933\: \!610\: \!243\: \!228\: \!5}}$$

It is because division is done before addition and subtraction   Remember PEDMAS    

To do it on the calc you need to put more brackets in,  then it gives you the answer that you seek :))

( 2ln10+log20 ) / ( log121-ln11 )

$${\frac{\left({\mathtt{2}}{\mathtt{\,\times\,}}{ln}{\left({\mathtt{10}}\right)}{\mathtt{\,\small\textbf+\,}}{log}_{10}\left({\mathtt{20}}\right)\right)}{\left({log}_{10}\left({\mathtt{121}}\right){\mathtt{\,-\,}}{ln}{\left({\mathtt{11}}\right)}\right)}} = -{\mathtt{18.743\: \!302\: \!368\: \!896\: \!347\: \!2}}$$

Sorry I have taken so long to answer MG   

Here are some videos on volume that you might like to look at 

They are ordered from easiest to hardest :)

i am the writer of this question can i get some help

Hmmm, this is more of a life problem than a math problem here

most likely yeah, religious people are somewhat and sometimes insane when it comes to relationships of a person with one religion talking to someone with another.

example: catholic and muslim

so yea, some religious people are insane

So the answer has to be 21/26/31/36... etc.

If he had to then divide into groups of 4 he'd have left over: 1, 0, 3, 0...

If ditto 3, ditto: 0, 2... bang there it is - 26

If six, same as three... 26

If seven... nope

eight, same as four

So I worked it out even though the question was missing. Pretty Awesome, beat that Hawkings.

Hi!

My answer is "Yes", because when a unit of something is "taken away" from a set, it would be a whole number for whichever set to which it was added, and after all, negative numbers perform the practical function of removing just as positive numbers perform the function of adding and aggregating; and one mustn't lose sight of the practical origin of maths.

However, factoring in the pedantic nature of humans for trying to look clever through verbal technicalities, If you define a whole number in a particular way, then whether it is one will be a tautology based entirely on your prior definition. What you are really asking for is the definition of a whole number, rather than whether a negative number is a whole number. When you think about it deeply, there is no such thing as a whole number, anymore than there was born a man without parents who didn't eat, age or breathe. There is just 'stuff'.

7C4        16 - system     =>    1988  decimal 

7C4        13 - system     =>    1343  decimal

7C4        15 - system     =>    1759  decimal

    7               C          4           in 16 -system

7*16²  +  12*16  + 4   =    1988       in the decimal system

$${\mathtt{7}}{\mathtt{\,\times\,}}{{\mathtt{16}}}^{{\mathtt{2}}}{\mathtt{\,\small\textbf+\,}}{\mathtt{12}}{\mathtt{\,\times\,}}{{\mathtt{16}}}^{{\mathtt{1}}}{\mathtt{\,\small\textbf+\,}}{\mathtt{4}}{\mathtt{\,\times\,}}{{\mathtt{16}}}^{{\mathtt{0}}} = {\mathtt{1\,988}}$$

Gruß radix !

I find this expression inelegant. Such is my evaluation of it. What does the little hat mean?

First notice this can be written as (2x)³ + 3(2x)²(3y) + 3(2x)(3y)² + (3y)³ 

This is more easily recognisable as  (2x + 3y)³

.

I  think everyone drowned and the train derailed somewhere in the East China Sea  

I suppose it was an amphibious train  

It took 6hours and 45 minutes.  Take out the 30 min break.  

That is 6 hours and 15 minutes.

That is      $$6\frac{1}{4}\;\;hours = 6.25\; hours$$

$$6.25hours\times 350km/hour$$

$${\mathtt{6.25}}{\mathtt{\,\times\,}}{\mathtt{350}} = {\frac{{\mathtt{4\,375}}}{{\mathtt{2}}}} = {\mathtt{2\,187.5}}$$

2187.5 km

Sorry anon, your idea didn't work because the answer is so tiny that most calculators will not give a proper answer.

$${{\mathtt{0.088\: \!8}}}^{{\mathtt{60}}} = {\mathtt{0}}$$

Here is another idea

$$\\8.88^{60}*(10^{-2})^{60}\\\\
8.88^{60}*10^{-120}\\\\$$

From the home page calc      

$$\\8.88^{60}=8.031153870389\times 10^{56}\\\\
so\\
0.0888^{60}\\\\
=8.031153870389\times 10^{56} \times 10^{-120}\\\\
=8.031153870389\times 10^{-64}\\\\$$

If there is one winning ticket then you have 2000 chances to win out of a possible 800000 tickets.

$${\frac{{\mathtt{2\,000}}}{{\mathtt{800\,000}}}}{\mathtt{\,\times\,}}{\mathtt{100}} = {\frac{{\mathtt{1}}}{{\mathtt{4}}}} = {\mathtt{0.25}}$$  

That is 0.25% chance     (exactly 1 chance in 400)

Thanks Anon :)

Anon's answer only showed up to the moderators

Links by anon's are not displayed.

I answered that exact question only a few posts back!

http://web2.0calc.com/questions/is-1-considered-to-be-a-prime-number

This may help!