CPhill

y = (1/5)x - 10

This question doesn't make any sense.....

I assume you want to find the width and length

Note that there are 7 parts to the L:W ratio  (3:4 indicates 7 parts)

And 1/2 of the perimeter is just the (width + length )

And 1/2 of the perimeter  = 35

So, since there are 7 parts in 35, each part must be 5

So, 4/7 of 35  = 20  = width

And 3/7 0f 35 = 15  = length

And notice that the  L/W ratio = 15:20  = 3:4   !!!

{-30, -8,  - 4 , 2}  forms the set of whole numbers

Use the tangent inverse....for example

If tan = 5/13    ....then to find the angle......we have

tan^-1(5/13)  = about 21.04°  (or about 201.04°)

For a proper fraction, just divide the numerator by the denominator....

Example

6/13 ≈ .461

If smething is 30% off, it is just 70% of its orginal value.   So....

220 x 70%  =

220 x .70 =

154

So we have.....

6698n x 58964= 3949703540

n = 3949703650/(6698 * 58964) = 10.0007467700127021

13 - (-4)  = 17 degrees

Change in volume = (4/3)*pi *(6.4 - 6.2)^3 =

(4/3)* pi * (.2)^3 = about .034 cm³