Answer:
number of protons
Step-by-step explanation:
The identity of an element is determined by the number of protons. One cannot alter the number of protons without altering the identity of the element. By adding a proton, the atomic number increases by one and the element identity changes. Number of neutrons can be altered to create isotopes.
Answer:
Step-by-step explanation:
Let the speed of the current be c
<u>Time upstream is</u>
<u>Time downstream is</u>
<u>Total time is 8 hours</u>
- 55/(16 + c) + 55/(16 - c) = 8
- 55(16 -c + 16 + c)/(16 + c)(16 - c) = 8
- 55*32= 8*(16² - c²)
- 220 = 256 - c²
- c² = 36
- c = 6 mph
2x^2 -6x -2+x^2+4x
All you have to do is add like terms
2x^2+x^2
= 3x^2
-6x+4x
= -2x
Then add them together to get one equation
3x^2 -2x -2
I recommend you study how to add variables as these are very basic sums. Just practice :)
Answer:
।When fossil fuels are burned, they release large amounts of carbon dioxide, a greenhouse gas, into the air. Greenhouse gases trap heat in our atmosphere, When fossil fuels are burned, they release large amounts of carbon dioxide, a greenhouse gas, into the air. Greenhouse gases trap heat in our atmosphere, causing
Answer:
C)
Step-by-step explanation:
Remember to use the change of base formula, which states that so that everything has the same base of 10