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Vlad [161]
3 years ago
11

Jkl;jkl;jjjjjjjjjjjjjjjjjjjjj

Mathematics
2 answers:
nika2105 [10]3 years ago
8 0

Answer:

98-40\sqrt{6}

Step-by-step explanation:

stepladder [879]3 years ago
6 0

Answer:

-2

Step-by-step explanation:

Hopefully this helps you

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ΔABC has three sides with these lengths: AB = 9, BC = 40, and CA = 41. What is the value of cos C?
kotykmax [81]

Answer:

cos(C) =\frac{40}{41}\\\\cos(C)=0.976

Step-by-step explanation:

To find the cos (C) we must use the cosine theorem.

The cosine theorem says that:

c^2 = a^2 +b^2 -2abcos(C)

In this case:

c=AB = 9

b=CA = 41

a=BC = 40

So

9^2 = 40^2 +41^2 -2(40)*(41)cos(C)

9^2- 40^2- 41^2 =-2(40)*(41)cos(C)

cos(C) = -\frac{9^2- 40^2- 41^2}{2(40)*(41)}

cos(C) =\frac{40}{41}\\\\cos(C)=0.976

7 0
3 years ago
What is the measure of the largest angle on the triangle!
nalin [4]
Okay, so as you may know the inside angles of a triangle always add up to 180! so you must first find x, so that means add up all equations to find x. your answer is 41




























6 0
3 years ago
Read 2 more answers
Wilber can mow 500 ft2 yard in 10 minutes. If he does not slow down, how long will it take Wilber to mow his neighbors yard that
NeTakaya

Answer:

70 hours

Step-by-step explanation:

3500 by 50 is 70

4 0
3 years ago
I need help on these please ​
sleet_krkn [62]

Answer:

its the third answer, fifth, and first. Im not sure tho.

Step-by-step explanation:

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4h = 17 <br> what is the letter H?
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Step-by-step explanation:

6 0
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