Answer:
139
Step-by-step explanation:
Substitute x for 15.
9(15)+4
Then multiply:
135+4
And then add:
139
The answer is 6 appointments are cancelled each day
Answer:
what is difficult about this problem? do you not have a calculator? what part is tough?
Step-by-step explanation:
The cross product of two vectors gives a third vector

that is orthogonal to the first two.

Normalize this vector by dividing it by its norm:

To get another vector orthogonal to the first two, you can just change the sign and use

.