The differential of

is

where the partial derivatives are

So the differential d<em>w</em> is

Answer:
Step-by-step explanation:
A+C = 180 = A + 74 -> A = 106
B +D = 180 = B +88 -> D = 92
x = 92
Answer:
4 yards
Step-by-step explanation:
If 1 yard is 3 feet, divide 12 feet by 3. You will get 4 yards as your answer.
Answer:
3x - y = -7
Step-by-step explanation:
y = mx + b
m = deltay/deltax
m = (10 - 1)/[( 1 - (-2)]
m = 9/3 = 3
y = 3x + b
From (-2 | 1) we see that when x = -2, y = 1
Placing into the equation, in order to find b (y-intercept)
y = 3x + b
1 = 3(-2) + b
b = 7
y = 3x + 7 or 3x - y = -7