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svet-max [94.6K]
2 years ago
14

Please help, test due in 30 minutes! I will give brainliest.

Mathematics
2 answers:
Tema [17]2 years ago
6 0

Answer:

b. 460 cubic cm

Step-by-step explanation:

Andre45 [30]2 years ago
3 0
The answer is b.) 460
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A triangle has two sides measuring 16 and 21. The included angle is 116°. What is the length of the side opposite the 116° angle
aleksley [76]

Answer: A. 31.5

Step-by-step explanation:

Using law of cosine because it is side angle side

a=16

b=21

angle = 116

c^2=a^2+b^2-2ab cosC, let C be the angle given

c^2=(21)^2+(16)^2-2(16)(21) cos(116)

c^2=441+256-672 cos(116)

i used a ti-89 and answered the right side and got

(you can find a ti-89 simulator online, but for problems like this make sure it is in degree mode)

991.585

c^2=991.585

take square root of both sides

=31.4894, which if you round it up it would be 31.5, so the answer would be A

therefore:

a=16

b=21

c=31.5

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3 years ago
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Step-by-step explanation:

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Step-by-step explanation:

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How do you solve for x? -12+7=-5(x+2)
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