Answer:
4. dy/dx = -2
8. dy/dx = 1/2 x^(-3/2)
10/ dy/dr = 4 pi r^2
Step-by-step explanation:
4. y = -2x+7
dy/dx = -2(1)
dy/dx = -2
8. y = 4 - x^-1/2
dy/dx = - (-1/2x^ (-1/2-1)
dy/dx = 1/2 x^(-3/2)
10. y = 4/3 pi r^3
dy/dr = 4/3 pi (3r^2)
dy/dr = 4 pi r^2
In these types of questions, it’s best to Guess and Check.
88(2) – 124 = 52
88(8) – 124 = 580
Therefore... the correct option is y = 88x – 124
Answer:
x = 10/3
y = 2/9
Step-by-step explanation:
x + 3y = 4
2x - 3y = 6
Adding both equations gives:
3x + 0y = 10
Solving for x and y:
x = 10/3
y = 2/9