mgwlisp
22.06.2019 •
Mathematics
Find the measure of angle abc. a. 124 b. 97 c. 56 d. 51
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Ответ:
Answer D. 51
Step-by-step explanation:
Sum of the interior angles of a triangle is up to 180
.: 32+(2x-15) + (x-5) = 180
Group like terms
2x+x =180 - 32 + 15 + 5
When - and + sign cross equal sign it turns to the opposite
3x = 168
x= 168/3
.: X =56
Now put x = 56 in (x - 5)
Angle ABC = 51
Ответ:
168/3 = x
X= 56 and now substitute 56 for x and u get ur angles 51 and 97
Ответ: