Living up to his most sacred commitment is what Nixon was credited for in the passage.
<h3>Who was Nixon? </h3>
Richard Nixon was the 37th president of the United States and was well known for his sacred commitment.
His sacred commitment involved ensuring there was peace between countries which was why he did lots of diplomatic works during his tenure.
Read more about Nixon here brainly.com/question/838319
The 1st row has 15 chairs.
The 2nd row has 15 + 3 = 18 chairs.
The 3rd row has 18 + 3 = 15 + 2•3 = 21 chairs.
The 4th row has 21 + 3 = 15 + 3•3 = 24 chairs.
The pattern continues, so that the n-th row has 15 + (n - 1)•3 = 3n + 12 chairs.
If there are 15 rows, then the total number of chairs is
![\displaystyle \sum_{n=1}^{15} (3n + 12) = 3 \sum_{n=1}^{15} n + 12 \sum_{n=1}^{15} 1 = 3\cdot\frac{15\cdot16}2 + 12\cdot15 = \boxed{540}](https://tex.z-dn.net/?f=%5Cdisplaystyle%20%5Csum_%7Bn%3D1%7D%5E%7B15%7D%20%283n%20%2B%2012%29%20%3D%203%20%5Csum_%7Bn%3D1%7D%5E%7B15%7D%20n%20%2B%2012%20%5Csum_%7Bn%3D1%7D%5E%7B15%7D%201%20%3D%203%5Ccdot%5Cfrac%7B15%5Ccdot16%7D2%20%2B%2012%5Ccdot15%20%3D%20%5Cboxed%7B540%7D)
where we use the formulas
![\displaystyle \sum_{n=1}^N 1 = N](https://tex.z-dn.net/?f=%5Cdisplaystyle%20%5Csum_%7Bn%3D1%7D%5EN%201%20%3D%20N)
![\displaystyle \sum_{n=1}^N n = \frac{N(N+1)}2](https://tex.z-dn.net/?f=%5Cdisplaystyle%20%5Csum_%7Bn%3D1%7D%5EN%20n%20%3D%20%5Cfrac%7BN%28N%2B1%29%7D2)
Sun's particles travels through the windshield and hit the bar, the light will be changed to heat, so radiation of the sun through the windshield
Answer:
not correct you are
Determine ????∘ , δ????∘ , and K for the overall reaction from the balanced half-reactions and their standard reduction potentials. 2co3++h3aso3+h2o co3++e− h3aso4+2h++2e− ↽−−⇀ 2co2++h3aso4+2h+↽−−⇀ co2+↽−−⇀ h3aso3+h2o????∘=1. 92 v????∘=0. 575