Answer:
dz / dt = -50
Step-by-step explanation:
To solve the chain rule must apply, we have all the necessary values to make the calculation, as follows:
using the chain rule, we find:
dz / dt = (∂z / ∂x) * (∂x / ∂t) + (∂z / ∂y) * (∂y / ∂t)
Evaluating when t = 9, we have to:
fx (6, 4) * g '(9) + fy (6, 4) * h '(9)
We know that g '(9) = −6; h '(9) = 4; fx (6, 4) = 9; fy (6, 4) = 1
Replacing:
(9 * -6) + (1 * 4) = -50
Por lo tanto dz / dt = -50
<span> if x = 2
9x + 13 = 9*2 + 13 = 18 + 13 = 31
</span><span>D) 31</span>
The correct should be X=10
Answer:
15ft
Step-by-step explanation:
a^2 + b^2 = c^2
12 or 9 can equal to b or a
12^2 + 9^2 = c^2
144 + 81 = c ^2
225 = c^2
Square root of 225
15 = c
Step-by-step explanation:
(6×5)+(8×2)=46
92℅=46points
100℅=x
criss cross
<u>92℅x=46</u>
<u>9</u><u>2</u><u>℅</u><u>.</u><u> </u> 92℅
and this is the answer
