ElectricPavlov

4, -6   would be the center

A cube has all sides equal

Volume of a cube is H X W X D    (height     width   depth)

H & W  & D   are all the same

so   H X H X H = 512       H^3 = 512    H = Cuberoot(512) =  8 cm

Area = H x W   = 8 x8 = 64 cm^2

Surface area : there are SIX sides to a cube     so   6  x 64 = 384 cm^2

If side length is doubled to 16    volume = 16 x 16 x 16 =  4096 cm^3         (2x 2 x 2 x 512= 4096)

Wow.....you left out some critical information.

What are the sizes of the planks....what shape of structure did she build ?     Etc

Do the PARENTHESES first   then the multiplication

6/2 ( 1+2) =   6/2 (3) = (6x3) / 2 = 18/2 = 9

You are given   m/h     and m    and want  h  

so if we    DIVIDE m   BY  m/h

we get

m  /   m/h   =   m x h/m   = h   (because the m's cancel)

So your answer is

3.8m / (285 m/h)  =  3.8  /   285/1  =  3.8  x   1/285  =  3.8/285 = 0.0133333333333333  hr    or   48 seconds

My guess is, you are looking for the pOH of the solution

pOH = -log[OH-]  = -log [3.46 x 10^-3 ]   =  -log(0.00346) =  2.46

Unit rate in this instance is miles per hour   or   m/h    so just divide miles by hours

270/6 =  ??    mph    (use the calculator)

IF it has a root   -1 -3i   it ALSO has a root  -1+3i

so if you multiply

(x-5)(x+1+3i)(x+1-3i)        all out

you will get

x^3-3x^2-50       "C" 

'normal' ususally means perpindicular to the surface the object is on.....just an FYI     G'Day !

When you have a graph of a line,

the y intercept (or y-axis intercept) is where the line crosses the y-axis (this is where x=0)

   the x-intercept (or x-axis intercept) is where the line crosses the x-axis (this is where y=0)

So if you have an equation of a line i the form of y=mx+b    Just put x=0 to find the y intercept

    and put y=0 to find the x-intercept.