<span>(a) the slope of curve is calculated from the derivative of the curve expression y=5/x. In this problem, the slope m=-5/(a^2).
(b) x=1, y=5，and m=-5, the tangent line is y-5=-5*(x-1).
x=4, y=5/4, and m=-5/16, the tangent line is y-5/4=-5/16*(x-4)</span>
Answer:
Step-by-step explanation:
Factor the equation 
using formula for difference of the cubes:
then
1. The equation 
has real solution 
2. The equation 
has negative discriminant 
then it has two complex solutions
Answer:
3.60
Step-by-step explanation:
2% of 180 is 2*180/100
x=3.60
Answer:
76
Step-by-step explanation:
(5x3)+(5x3)=30
15-6=9
5x9=45
45+30=75
Since 76 is the closest to 75 it's 76
