The question is asking to calculate the are of the triangle ABC with altitude CD and given coordinates, base on the question and the given coordinates and through my further calculation, the possible answer would be letter <span>c. 10 square units. I hope you are satisfied with my answer </span>
Answer:
f ( x ) = - 101
Step-by-step explanation:
Step 1:
f ( x ) = - x² - 20 Function
Step 2:
f ( x ) = - 9² - 20 Substitute x
Step 3:
f ( x ) = - 81 - 20 Exponents
Answer:
f ( x ) = - 101 Subtract
Hope This Helps :)

First you had to used their apply exponent rule.
And it gave us ⇒ 
Then apply exponent rule again.
And it gave us ⇒ 




Final answer: ⇒ 
Hope this helps!
And thank you for posting your question at here on brainly, and have a great day.
-Charlie
Answer: The helicopter is 8 miles from the landing pad.
The helicopter must fly to east to reach the landing pad.
Step-by-step explanation:The helicopter flies north which is upward for 4 miles, the southwest is at an angle downwards to the left for 9 miles. Overall the right hand triangle is formed, therefore we can use Pythagoras to solve for X.
r^2=x^2+y^2
r = 9
y = 4
Then x= 8.06
We moved y to the other side and solve for x and we placed square roots on both sides to solve for x.
The helicopter must move straight to the right to reach landing pad.
Given : Solve 7/5 = x/3
Solution :
<u>Henceforth, the answer is 4.2</u>