Answer:
80
Step-by-step explanation:
Delta math math
If

then we should have

Differentiating with respect to
gives


So
is indeed conservative, and

Answer:
Just to be on the safe side the first #1 is 31.5 and the second #1 is 57.82
Answer:
x = 5 pens
y = 7 pencils
Step-by-step explanation:
let
x = the number of pens
y = the number of pencils
Anthony spent $2.80 to buy a total of 12 pens and pencils
0.35x + 0.15y = 2.80
x + y = 12
by solving the system of equations
0.35x + 0.15y = 2.80
x + y = 12
we find
x = 5 pens
y = 7 pencils
820
Explanation: it is .82x (1,000/15,000)