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Anit [1.1K]
3 years ago
8

The sum of 8x2 -x+4 and x-5 is

Mathematics
1 answer:
Leokris [45]3 years ago
4 0
The answer is 9bahahaha
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What's the algebraic expression of "The greatest possible value of 3y is 30"
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3 years ago
Trigonometry
ValentinkaMS [17]

Answer:

\cos(A)=\frac{12}{13}

Step-by-step explanation:

Without loss of generality, let AB=24 and BC=10 (follows tan(C)=2.4). In a right triangle, the tangent of an angle is equal to its opposite side divided by its adjacent side and the cosine of an angle is equal to its adjacent side divided by the hypotenuse.

We can use the Pythagorean Theorem (a^2+b^2=c^2, where c is the hypotenuse) to solve for the hypotenuse:

24^2+10^2=h^2,\\h^2=676,\\h=26

Therefore, \cos(A)=\frac{24}{26}=\boxed{\frac{12}{13}}

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