Answer:
It is D:<u> an = (– 1/6) ⋅ an–1 </u>
Step-by-step explanation:
You didn’t show the figure
Answer:
actually what is this is you is this a geometry, trigonometry I don't know what to call
![\sf{\qquad\qquad\huge\underline{{\sf Answer}}}](https://tex.z-dn.net/?f=%20%5Csf%7B%5Cqquad%5Cqquad%5Chuge%5Cunderline%7B%7B%5Csf%20Answer%7D%7D%7D%20)
Rate of traveling is 10 mph, we have been asked to find how long the person will take to travel 1.25 miles.
By speed, distance and time formula :
![\qquad \sf \dashrightarrow \:d istance= speed \times time](https://tex.z-dn.net/?f=%5Cqquad%20%5Csf%20%20%5Cdashrightarrow%20%5C%3Ad%20istance%3D%20speed%20%5Ctimes%20time)
![\qquad \sf \dashrightarrow \:1.25 = 10 \times t](https://tex.z-dn.net/?f=%5Cqquad%20%5Csf%20%20%5Cdashrightarrow%20%20%5C%3A1.25%20%3D%2010%20%5Ctimes%20t)
![\qquad \sf \dashrightarrow \:t = \dfrac{1.25}{10}](https://tex.z-dn.net/?f=%5Cqquad%20%5Csf%20%20%5Cdashrightarrow%20%5C%3At%20%3D%20%20%5Cdfrac%7B1.25%7D%7B10%7D%20)
![\qquad \sf \dashrightarrow \:t = 0.125 \: \: hours](https://tex.z-dn.net/?f=%5Cqquad%20%5Csf%20%20%5Cdashrightarrow%20%5C%3At%20%3D%200.125%20%5C%3A%20%20%5C%3A%20hours)
or
![\qquad \sf \dashrightarrow \:t = 0.125 \times 60](https://tex.z-dn.net/?f=%5Cqquad%20%5Csf%20%20%5Cdashrightarrow%20%5C%3At%20%3D%200.125%20%5Ctimes%2060)
![\qquad \sf \dashrightarrow \:t = 7.5 \: \: minutes](https://tex.z-dn.net/?f=%5Cqquad%20%5Csf%20%20%5Cdashrightarrow%20%5C%3At%20%3D%207.5%20%5C%3A%20%20%5C%3A%20minutes)
A° = 1/2 (90) = 45°
b° = 1/2[360 - (110 + 90)]
b° = 1/2(160)
b° = 80°
a° + b° = 45° + 80° = 135°
Answer
135°