Melody

x+7=10

subtract 7 off both sides

x+7-7=10-7

       x=3

@@ End of Day Wrap       Wed 19/11/14       Sydney,   Australia     Time 9:40 pm          ♬

Hello everyone,

Another busy day with a great many members offering great solutions.  These members were  Alan, sasflower, happy7, CPhill, relic, dancegirl101, geno3141,irmjj, BrittanyJ, Tiddle, JonesDaBoi, dogeminer, Rom, Pyramid and Heureka.  You are all wonderful.  

Now for some interest posts:

1) A look at imaginary numbers - powers of i

20/11/14

1) The children had a 'poetry fight' this morning

Thanks heureka,

This post is not just for heureka   

I am still a little confused. Is there a glitch in the calculator?  Why wasn't happy's answer the same?

$$\underset{\,\,\,\,^{\textcolor[rgb]{0.66,0.66,0.66}{360^\circ}}}{{sin}}{\left({\mathtt{400}}^\circ\right)} = {\mathtt{0.642\: \!787\: \!609\: \!687}}$$

$$\underset{\,\,\,\,^{\textcolor[rgb]{0.66,0.66,0.66}{360^\circ}}}{{sin}}{\left({\mathtt{400}}{\mathtt{\,-\,}}{\mathtt{360}}\right)} = {\mathtt{0.642\: \!787\: \!609\: \!687}}$$

Okay so why was mod function necessary - was it just that the sine function could not handle an angle that  was so huge?

9x-x=9x-1x=8x

I think that you are asking what percenage of the payment goes towards paying off the principal.

it will be

700/11000*100       percent

$${\frac{{\mathtt{700}}}{{\mathtt{11\,000}}}}{\mathtt{\,\times\,}}{\mathtt{100}} = {\frac{{\mathtt{70}}}{{\mathtt{11}}}} = {\mathtt{6.363\: \!636\: \!363\: \!636\: \!363\: \!6}}$$

6.36%

Hi Rom,  it is really great to see you here !!!     

4.5*10^12=4500000000000

I do not understand this question  

this is the only bit of your question that I understand 

$$\\|x^2 - 7| <0.5\\\\
-0.5 -0.5+7 6.5 6.5 x^2>6.5\qquad or\quad x^2<7.5\\\\$$

$$[x<-\sqrt{6.5}\quad\cup\quad x>\sqrt{6.5}\quad ]\quad \cap \quad[ -\sqrt{7.5}

this is easiest to see in a graph