Answer:
Step-by-step explanation:
First you have to do everything in the brackets, or [ ]. -7+-3--8 is equivalent to 8-3-7, which equals -2. After that you have to do the braces, or {}. That is -5--2, which is the same thing as 2-5, which equals -3. Finally, you can finish it out. -4--2--3 is equivalent to 3+2-4, which equals 1. Hope this helps!
It 43 degrees
You take 94+43= 137
180- 137= 43
Answer:
The second answer is the correct answer and the explanation in the attachment
By weight, oxygen makes up approximately 65% of the human body.
Numerically, hydrogen approaches 65% of the total number of atoms in the human body, but it is probably closer to 63% for most people.
Accounting by Mass:
The mass of the human body is provided mostly by oxygen, carbon, hydrogen, nitrogen. Together these elements account for about 96% of the mass of a human.
