Answer: 66%
Step-by-step explanation: 83- 50 50 x 100% = 66%
Masse of 1 proton: = 2.34 x 10⁻¹⁴
masse of 1000 protons = 2.34 x 10⁻¹⁴ x 1000 or 2.34 x 10 ⁻¹⁴ x 10³ =2.34 x 10⁻¹¹
Answer:
b
Step-by-step explanation:
the answer is b because you add all those together then boom
The area would be 144cm^2.
In order to find the area, we need to know the length of the rectangle. We can find that using the perimeter formula.
2l + 2w = P
2l + 2(36) = 80
2l + 72 = 80
2l = 8
l = 4
So now that we know the length is 4, we can find the area using that formula.
A = lw
A = (4)(36)
A = 144
Jenny pencil is as long as a giraffe's neck.