Answer:
It took 5 hours
Step-by-step explanation:
45 = 10 + 7x
35 = 7x
5 = x
The cosine of angle X is

By the Pythagorean theorem, we have

Then

Multiplying numerator and denominator by 2, we get
.
Answer:
x= -14
Step-by-step explanation:
Please see attached picture for full solution.
Answer:
(-1, -5)
Step-by-step explanation:
going to the left makes you go into the (-, +) plane and going down from there makes you go into the (-, -) plane.
If you’re asking what percentage was taken off, it would be 31.5%. (70*.45=31.5)