Answer:
,
, 
Step-by-step explanation:
The marginal cost function is:

The marginal cost for 100 books is:

The difference is:


The relative error is:


The given triangle is
To solve for PR, we have to use the sine function which is equivalent to the ratio between the opposite leg and the hypothenuse.

<h2>Hence, PR is 37.04 mm long, approximately.</h2>
Answer:
x = 16
Step-by-step explanation:
Δ AED and Δ ACB are similar thus the ratios of corresponding sides are equal, that is
=
, substitute values
=
( cross- multiply )
11x = 8(6 + x) ← distribute
11x = 48 + 8x ( subtract 8x from both sides )
3x = 48 ( divide both sides by 3 )
x = 16