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DiKsa [7]
2 years ago
6

PLEASE HELP 20 POINTS

Mathematics
1 answer:
barxatty [35]2 years ago
8 0

Step-by-step explanation:

-  \sqrt{5 }  - 3 \sqrt{5}  \\   = ( -  \sqrt{5})  + ( - 3 \sqrt{5} ) \\  = ( -  \sqrt{5} ) - (3 \sqrt{5} ) \\  =  - 4 \sqrt{5}

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Two of the angles in a triangle measure 53 degrees and 20 degrees. What must be the measure of the third angle
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We are given 2 points with there coordinates easy to calculate:

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