Answer:
12
Step-by-step explanation:
Large box --> M
Small box --> m
M+m=80
70M+60m=5300
Now solve this system of equations. Very easy job now.
Answer:
LN=37 units
Step-by-step explanation:
In this problem I will assume that M is a point between point L and point N
therefore
LN=LM+MN
substitute the given values
LN=22+15=37 units
Answer:
The interval of increase of g(x) is
.
Step-by-step explanation:
The interval of increase occurs when first derivative of given function brings positive values. Let be
, the first derivative of the function is:


The following condition must be met to define the interval of increase:

The first term is always position due to the quadratic form, the second one is a first order polynomial and it is known that positive value is a product of two positive or negative values. Then, the second form must satisfy this:

The solution to this inequation is:

Now, the solution to this expression in interval notation is: 
Answer:
70
Step-by-step explanation:
21/.3