Answer:
19
Step-by-step explanation:
when you multiply 19 by itself you get 361
It looks like the first 3 are because they all are blank x2.5 but the last one would be 8x2.5=20..
Answer:
In the current model, the number of electrons in the atom is determined by gamma and x-ray spectroscopy. The number of protons in the atom is chosen to balance the charge of the electrons in the atom. The number of neutrons in the atom is chosen to give the correct atomic weight for the element in question.
Step-by-step explanation:
The problem is 41+42+43+44=170
Answer:
- x = 18
- 45°
Step-by-step explanation:
First part:
- Write out an equation to represent the image: 2x + 3x = 90
- Combine like terms: 5x = 90
- Divide each side by 5 to cancel out the 5 next to x. It should now look like this: x = 18
Second part:
- 90 ÷ 2 = 45°
I hope this helps!