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Vaselesa [24]
3 years ago
6

PLEASE HELP! URGENT. the law of cosines is a2+b2-2abcosC=c2. Find the value of 2abccosC.

Mathematics
1 answer:
Elodia [21]3 years ago
5 0

Answer:

D

Step-by-step explanation:

2ab*cos(C)=a^2+b^2-c^2

2ab*cos(C)=5^2+4^2-2^2=25+12=37

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Write a two operation expression that equals 31 when evaluated for x=5
RSB [31]
X*6+1=31

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30+1=31

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Hope this helps! If you have any questions, just ask me!
5 0
4 years ago
How do you model 3x= -12 using algebra tiles
alexira [117]
Use 12 to divide evenly among 3 sets. it will be 4 each set. 12 is negative, and you are dividing by a positive, so the answer will be negative (-4). 
5 0
3 years ago
Show how u got the answer 309×42
luda_lava [24]
                3            
                1
                390
              x  42
               -------
                1282
              1564
          ----------------
                       
the answer would be 16380
Hope this helped :)
4 0
4 years ago
Please Help Me Its due Today :0
Natali5045456 [20]

Answer:

The selected answer seem correct...

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Step-by-step explanation:

3 0
3 years ago
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natali 33 [55]

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Step-by-step explanation:

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4 years ago
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