your endpoints are correct, however recall that x² means (x)².
![\bf \begin{array}{cllll} ~~1\times [(-2)^2+8]\\\\ +1\times [(-1)^2+8]\\\\ +1\times [(0)^2+8]\\\\ +1\times [(1)^2+8] \end{array}\implies \begin{array}{llll} ~~4+8\\\\ +1+8\\\\ +0+8\\\\ +1+8 \end{array}\implies \begin{array}{cll} ~12\\ +9\\ +8\\ +9\\ \text{\textemdash\textemdash\textemdash}\\ 38 \end{array}](https://tex.z-dn.net/?f=%20%5Cbf%20%5Cbegin%7Barray%7D%7Bcllll%7D%20~~1%5Ctimes%20%5B%28-2%29%5E2%2B8%5D%5C%5C%5C%5C%20%2B1%5Ctimes%20%5B%28-1%29%5E2%2B8%5D%5C%5C%5C%5C%20%2B1%5Ctimes%20%5B%280%29%5E2%2B8%5D%5C%5C%5C%5C%20%2B1%5Ctimes%20%5B%281%29%5E2%2B8%5D%20%5Cend%7Barray%7D%5Cimplies%20%20%5Cbegin%7Barray%7D%7Bllll%7D%20~~4%2B8%5C%5C%5C%5C%20%2B1%2B8%5C%5C%5C%5C%20%2B0%2B8%5C%5C%5C%5C%20%2B1%2B8%20%5Cend%7Barray%7D%5Cimplies%20%20%5Cbegin%7Barray%7D%7Bcll%7D%20~12%5C%5C%20%2B9%5C%5C%20%2B8%5C%5C%20%2B9%5C%5C%20%5Ctext%7B%5Ctextemdash%5Ctextemdash%5Ctextemdash%7D%5C%5C%2038%20%5Cend%7Barray%7D%20)
Answer:
56.25 degrees
Step-by-step explanation:
This is dealing with an adjacent and hypotenuse variable, so you use cosine. Since your want to find the angle, u have to use cos^-1 times 5 over 9. Because when you use cosine its adjacent over hypotenuse. cos^-1(5/9)
Answer:
x = 54
Step-by-step explanation:
These angles are complementary because they add up to 90:
x - 7 + 43 = 90
x + 36 = 90
x = 90 - 36
x = 54
Yes. youre right, but no2 you can kinda make it a little more 3d like their example just saying
85.7%
4500/5250=.857
move decimal 2 places to the right to convert a decimal to a percentage
