Answer:
Domain: {2, 3, 4 }
Range: {3, 5, 7, 8}
Step-by-step explanation:
hope this helps and is right. p.s. i really need brainliest :)
Tree is 64.90 ft tall !
<u>Step-by-step explanation:</u>
We have , Alex wants to measure the height of a tree. Alex walks exactly 100 feet from the base of the tree and looks up. The angle from the ground to the top of the tree is 33. We need to find How tall is the tree . Let's find out:
According to questions we have following dimensions for a right angle triangle:
, where x is angle from the ground to the top of the tree
In right angle triangle ,
![Tanx = \frac{Perpendicular}{Base}](https://tex.z-dn.net/?f=Tanx%20%3D%20%5Cfrac%7BPerpendicular%7D%7BBase%7D)
⇒ ![Tan33 = \frac{Perpendicular}{100}](https://tex.z-dn.net/?f=Tan33%20%3D%20%5Cfrac%7BPerpendicular%7D%7B100%7D)
⇒ ![Perpendicular= 100(Tan33)](https://tex.z-dn.net/?f=Perpendicular%3D%20100%28Tan33%29)
⇒ ![Perpendicular= 100(0.649)](https://tex.z-dn.net/?f=Perpendicular%3D%20100%280.649%29)
⇒ ![Perpendicular= 64.90ft](https://tex.z-dn.net/?f=Perpendicular%3D%2064.90ft)
Therefore , Tree is 64.90 ft tall !
f(x)=2x^2+0x-5
Find the vertex
0/4=0=x
Input x into the equation to find y or f(x)
0+0-5=f(x)
(0,-5) = Vertex
Now find a random x coordinate to input into the equation.
Let's do 4.
32+0-5=f(x)=27
It may not look like a parabola due to it being uneven.
The 3 different points form a right angle so we us Pythagoras theorem:-
If distance is d:-
d^2 = 1^2 + 1^2
d = sqrt 2 or 1.414 miles to nearest thousandth
Answer:$30
Step-by-step explanation:8+12=20 and I would figure she had another one with a price inbetween the two so I chose 10 and added 20+10=30