All Answers 358150 Answers

25/3/15

Did you actually watch the clip MG.  Your comments do not seem to be related.  :)

$$\\x^8=2\\\\
x=2^{1/8}\\\\
x=\sqrt[8]{2}$$

120% of x = 30

1.20x=30

x=30/1.2

$$\\-9(x-3)-7=20 \\\\
-9x+27-7=20\\\\
-9x+20=20\\\\
-9x=0\\\\
x=0$$

$$\\x^2+y^2=4\qquad(1)\\\\
x+y=2 \;\;\rightarrow \;\;y=2-x\qquad(2)\\\\
sub\;\;2\;into\;1\\\\
x^2+(2-x)^2=4\\\\
x^2+4+x^2-4x=4\\\\
2x^2-4x=0\\\\
2(x-2)(x+2)=0\\\\
x=\pm 2$$

You can find the y values :)

You cannot SOLVE it because there is no equal sign.  :)

I think you need to give us an example of what you mean :)

yoselinedilla is correct but I would probably word it as   28children / bus

$$\\(1+2x) \times 5\\
=5 \times(1+2x)\\
=5(1+2x)
\\
=5+10x\\$$

Another great answer.  Thanks Gibsonj  

Great answer Gibsonj338  

Usually length refers to the long side (of a rectangle for instance) and width refers to the short side.

I  thnk that they are all meant to be capital Fs

A function F(x) has these properties:

F(1)= 1

F(x+1)= F(x) + 3x(x+1)

Determine F(3)

 the answer is 27 

--------------------

 F(1)=1

F(2) = F(1+1)=F(1)+3*1*(1+1) = 1+6=7

F(3) = F(2+1)=F(2)+3*2*3 = 7+18 = 25

the answer is 25 not 27.

It would be interesting for someone to find the equation for this sequence.  (Without it being recursive)

$$8^{+1}=8$$

3.1 - - 2.3 = 3.1+2.3 = 5.4

just like anon said :)

Top row of the calculator

$$\\\frac{(a+b)}{2}^2 - \frac{(a-b)}{2}^2\\\\
=\frac{(a^2+b^2+2ab)}{4} - \frac{(a^2+b^2-2ab)}{4}\\\\
=\frac{(a^2+b^2+2ab)-(a^2+b^2-2ab)}{4} \\\\
=\frac{a^2+b^2+2ab -a^2-b^2+2ab}{4} \\\\
=\frac{2ab +2ab}{4} \\\\
=\frac{4ab}{4} \\\\
=ab$$

$$\\(-1)^7
=-1*-1*-1*-1*-1*-1*-1\\
=(-1*-1)*(-1*-1)*(-1*-1)*-1\\
=1*1*1*-1\\
=-1$$

$$\\(-1)^{odd\; number}=-1\\
(-1)^{even\; number}=+1\\$$

A = 1/2    * base * height

y=-3-3=-6     (3,-6)

All too much for me MG        

it cannot be factored

Deg stands for degrees.  I expect you know what they are.

rad stands for radians.  Radians are also used to measure angles. 

there are  90 degrees in a right angle              there are    $$\frac{\pi}{2}$$  radians in a right angle

there are 180 degrees in a straight angle         there are $$\pi$$  radians in a straight angle

and

360degrees in a revolution.                           there are $$2\pi$$  radians in a revolutions