I believe it’s the last one, but I could be wrong.. The n three times= 3n+15 (less than itself)-n ??
Answer:
Step-by-step explanation:
Assuming 'x' the distance helicopter needs to fly to be directly over the tower.
It is given that a helicopter flying 3590 feet above ground spots the top of a 150-foot tall cell phone tower at an angle of depression of 83°.
From attachment that helicopter, tower and angle of depression forms a right triangle.
As height of tower is 150 feet, so the vertical distance between helicopter and tower will be: 3590-150=3440 feet.
Also, the side with length 3590-150 feet is opposite and side x is adjacent side to 83° angle.
As the tangent relates the opposite side of a right triangle to its adjacent side, so we will use tangent to find the length of x.
=>
Thus, the helicopter must fly approximately 422.4 feet to be directly over the tower.
Step-by-step explanation:
For a moment let y = x^2 + 5
Then by the distributive property
(2x^2 + 4x - 3 ) P = . 2x^2p + 4xp - 3p
Again by the distributive
2x^2 p = 2x^2(x^2 - 2x +5) = 2x^4 - 4x^3 + 10x^2
4xp = 4x(x^2 + 5) = 4x^3 - 8X^2 +20x
-3p = -3(x^2 - 2x + 5) = -3x^2 + 6x -15
Taking everything together we get
(2x^2 + 4x -3 )(x^2-2x + 5) = (2x^4 -4x^3 +10X^2) + (4x^3 - 8x^2 + 20) + -3x^2 + 6x -15)(2X^2 + 4x - 3 )(x^2 -2x = 5) = 2x^4 + 26 - 15
Answer:
C. x = 6.0
Step-by-step explanation:
If you use the Pythagorean Theorem, you'll see that x^2 + 5^2 = 8^2. That'll simplify down to
x^2 + 25 = 64. Then you subtract 25 from 64 and that'll give you 39. You then have to find what √39 is and that is 6.244, so that is 6.0 simplified to the nearest tenth.