Help me with this equation plz!!!!! It’s a geometry question
2 answers:
Answer:
Step-by-step explanation:
Remark
The adjacent side is one of the two sides making up the acute angle in a right triangle. The second side is the Hypotenuse.
Givens
Cos(C) = side Adjacent / Hypotenuse
Cos(49) = 0.6561
Side Adjacent = 18
Solution
Cos(C) = side adjacent / Hypotenuse Multiply both sides by the hypotenuse
Hypotenuse * Cos(C) = Side Adjacent Divide by Cos(C)
Hypotenuse = Side Adjacent / Cos(C)
Hypotenuse = 18 / Cos(C)
Hypotenuse = 18 / 0.6561
Hypotenuse = 27.437
Answer:
x≈11.8
Step-by-step explanation:
Since this is a right triangle, we can use cosine to find the length of CD.
First, set up an equation, then solve:
cos(49°)=18/x
x=18/cos(49°)
x≈ 11.80906252
rounded to the nearest tenth of a foot:
x≈11.8
You might be interested in
Answer:
number of terms=9
Step-by-step explanation:
![t_{1}=6\\t_{5}=18\\\\t_{n}=t_{1}+(n-1)d\\18=6+(5-1)d\\18-6=4d\\4d=12\\d=12/4=3\\s_{n}=162\\s_{n}=\frac{n}{2}[2t_{1}+(n-1)d]\\162=\frac{n}{2}[2(6)+(n-1)3]\\162 \times 2=n(12+3n-3)\\324=n(3n+9)\\3n^2+9n-324=0\\n^2+3n-108=0\\n^2+12n-9n-108=0\\n(n+12)-9(n+12)=0\\(n+12)(n-9)=0\\n=-12,9\\n=-12 (rejected)](https://tex.z-dn.net/?f=t_%7B1%7D%3D6%5C%5Ct_%7B5%7D%3D18%5C%5C%5C%5Ct_%7Bn%7D%3Dt_%7B1%7D%2B%28n-1%29d%5C%5C18%3D6%2B%285-1%29d%5C%5C18-6%3D4d%5C%5C4d%3D12%5C%5Cd%3D12%2F4%3D3%5C%5Cs_%7Bn%7D%3D162%5C%5Cs_%7Bn%7D%3D%5Cfrac%7Bn%7D%7B2%7D%5B2t_%7B1%7D%2B%28n-1%29d%5D%5C%5C162%3D%5Cfrac%7Bn%7D%7B2%7D%5B2%286%29%2B%28n-1%293%5D%5C%5C162%20%5Ctimes%202%3Dn%2812%2B3n-3%29%5C%5C324%3Dn%283n%2B9%29%5C%5C3n%5E2%2B9n-324%3D0%5C%5Cn%5E2%2B3n-108%3D0%5C%5Cn%5E2%2B12n-9n-108%3D0%5C%5Cn%28n%2B12%29-9%28n%2B12%29%3D0%5C%5C%28n%2B12%29%28n-9%29%3D0%5C%5Cn%3D-12%2C9%5C%5Cn%3D-12%20%28rejected%29)
as number of terms can't be negative.
9x + 3 = 7x +19
2x + 3 = 19
2x = 16
x = 8
So, x (8) is the number of chairs in each row with these setups.
Plug 8 into one of the equations and you will find how many chairs total there are.
9(8) + 3 = 75
There are 75 chairs total
Answer:
the common multiple between 12 and 20 is 60
Answer:
2
Step-by-step explanation:
okay so imagine this, you have one cookie and you get another cookie. how many cookies do you have now? 2
Answer:
its A, a^9 b^6
Step-by-step explanation:
right on edge 2020