Answerj, C v v .
Step-by-step explanation:
Answer:
62.2°
Step-by-step explanation:
If a wire used to stabilize something is 115 feet long runs from
the top of a radio tower to a point on the ground 50 feet from the tower's base, then;
The set up will form a right angle triangle as shown
The Adjacent side = The base of the tower = 50 feet
The hypotenuse = length of the wire = 115feet
The Height of the tower = Opposite side of the set up.
theta = angle that the wire make with the ground
Using the SOH CAH TOA trigonometry Identity:
According to CAH;
Cos(theta) = Adjacent/Hypotenuse
Cos(theta) = 50/115
Cos theta = 0.435
theta = arccos 0.435
theta = 62.2°
Answer:
![(9a+9b-8)(a+b+1)](https://tex.z-dn.net/?f=%289a%2B9b-8%29%28a%2Bb%2B1%29)
Step-by-step explanation:
![9(a+b)^2 + (a+b)-8](https://tex.z-dn.net/?f=9%28a%2Bb%29%5E2%20%2B%20%28a%2Bb%29-8)
Expand ![(a+b)^2](https://tex.z-dn.net/?f=%28a%2Bb%29%5E2)
![9(a^2+2ab+b^2)+a+b-8](https://tex.z-dn.net/?f=9%28a%5E2%2B2ab%2Bb%5E2%29%2Ba%2Bb-8)
![9a^2+18ab+9b^2+a+b-8](https://tex.z-dn.net/?f=9a%5E2%2B18ab%2B9b%5E2%2Ba%2Bb-8)
Now it is time to think.
Once
![9a^2=9a \cdot a](https://tex.z-dn.net/?f=9a%5E2%3D9a%20%5Ccdot%20a)
![9b^2=9b \cdot b](https://tex.z-dn.net/?f=9b%5E2%3D9b%20%5Ccdot%20b)
![18ab=9ab+9ab](https://tex.z-dn.net/?f=18ab%3D9ab%2B9ab)
![-8=-8 \cdot 1](https://tex.z-dn.net/?f=-8%3D-8%20%5Ccdot%201)
We can get something in the format
![(9a+9b-8)(\text{some expression here})](https://tex.z-dn.net/?f=%289a%2B9b-8%29%28%5Ctext%7Bsome%20expression%20here%7D%29)
From the conclusions above,
![(9a+9b-8)(a+b+1)](https://tex.z-dn.net/?f=%289a%2B9b-8%29%28a%2Bb%2B1%29)
First you need to subtract 400:
1183.84-400=783.84
Then divide by 12 for every month of the year:
783.84/12=65.32
Answer:
Step-by-step explanation:
Original price $595.00
Discount amount 595(0.30) = $178.50
Pre tax price 595.00 - 178.50 = $416.50
tax amount 416.50(0.07) = 29.155 = $29.16
cost to Victoria 416.50 + 29.16 = $445.66