Melody

I'm impressed Chris :)

check

$${\mathtt{0.5}}{\mathtt{\,\times\,}}\left({\mathtt{26}}{\mathtt{\,\small\textbf+\,}}{\mathtt{40}}{\mathtt{\,\small\textbf+\,}}{\mathtt{64.78}}\right) = {\frac{{\mathtt{6\,539}}}{{\mathtt{100}}}} = {\mathtt{65.39}}$$

$${\sqrt{{\mathtt{65.39}}{\mathtt{\,\times\,}}\left({\mathtt{65.39}}{\mathtt{\,-\,}}{\mathtt{26}}\right){\mathtt{\,\times\,}}\left({\mathtt{65.39}}{\mathtt{\,-\,}}{\mathtt{40}}\right){\mathtt{\,\times\,}}\left({\mathtt{65.39}}{\mathtt{\,-\,}}{\mathtt{64.78}}\right)}} = {\mathtt{199.730\: \!747\: \!341\: \!489\: \!712\: \!9}}$$

yes that is correct

which is an equation of the line that is parallel to y = 2x - 8 and passes through the point (0,-3) ?

a) y = 2x + 3    b) y = 2x - 3    c) y = -1/2x + 3    d) y = -1/2x - 3

Well if it is parallel then it will have the same gradient   m=2

so it has to be a or b

sub in (0,-3) and see if it makes the equation true.

a) -3=2*0+3    not true

b) -3=2*0-3     true

so the answer is b

Use the calc on the home page. do not forget the * sign

Thanks Chris :)

think of negative numbers as cold numbers and positive numbers as hot numbers.

if you take away cold from a room then the room will get hotter.  so     - - 3 = +3

- 2 - - 3 = -2+3 =1

to get the last bit, start at -2 on the number line and go 3 places in the positive direction.

You end up at 1.

3x+4y+2x+5y

=3x+2x    +4y+5y

=5x  +  9y

10 x 10 is written as  10*10  and it equals 100

10²  is writen as 10^2   it is also equal to 10*10 and equals 100

Inverse trig is use to find angles.

Inverse trig is the same as arc trig  so on this calc you will use   asin

$$sin^{-1}(0.42)=asin(0.42)$$

$$\underset{\,\,\,\,^{\textcolor[rgb]{0.66,0.66,0.66}{360^\circ}}}{{sin}}^{\!\!\mathtt{-1}}{\left({\mathtt{0.42}}\right)} = {\mathtt{24.834\: \!587\: \!489\: \!702^{\circ}}}$$

English translation

Is this the new 10+9 ?