Answer:
a) "ascend"
Step-by-step explanation:
a)
The equation is 
This question is asking for the value of the directional derivative in the direction of -j [since south that's y negative]
So, this is the negative of partial derivative of y. Thus we have:

Now we are at (100,120,1106), we take y value of 120 and put it in the partial:

We take the negative, that is -(-2.4) = 2.4
Since this is positive, we can say the hill is sloping upward at this point, so you will start to ascend.
Answer:1.079
Step-by-step explanation:
We know that log a +log b = logab
Using this rule, we will find log12.
Log6 + log2= log12
.778 + .301 = 1.079
In the second step while distributing she made a mistake
It should have been
2x^2 -4x -6x +18 = 9x - 27
So answer should be
She did not use the distributive property correctly
Answer:
Any letter you want
Step-by-step explanation:
The letters used for variables don't matter. What matters is what the variables represent: their numerical value. Variables are just to help identify what needs solving. Other common variables are a, b, and c which are found frequently in trigonometry. To answer your question, there are no "next letters." You can use any letter you'd like as a variable because it holds the same numerical value. Basically, the whole alphabet is at your disposal.
Answer:
113
Step-by-step explanation:
To find the result of the equation, you just have to apply the given information that x = 3 and y = -5 into the equation:
31x + y2 - (xy)2
= 31 * 3 + -5 * 2 - (3*-5) * 2
= 93 + -10 + 15 * 2
= 93 -10 + 30
= 83 + 30
= 113
Hope this help you :3