136 minutes or 2 hours, these are both rounded to the nearest whole number
Answer:

Step-by-step explanation:
We need to find the directional derivative of the function at the given point in the direction of the vector v.
,point (0, 0, 0) and 
By Theorem: If f is a differentiable function of x , y and z , then f has a directional derivative for any unit vector
and

where 
since, 
then 


The partial derivatives are


Then the directional derivative is

so, directional derivative at point (0,0,0)




To divide fractions you swap the numerator & denominator on the second fraction, the multiply the new numerators togeather & multiply the newdenominator together to get the answer. example attached.
Answer:
So the value is 18 dollars off which is $42
Step-by-step explanation:
Well we know 50% of 60 is 30 so we want to multiply 60 x 30 = 180 and the denominator would be 100 so 180/100 now we make 180, 18! which makes 18 dollars off so 60 - 18 = 42