I need help to understand before my test today
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Mathematics, 15.12.2020 21:40 Jilly8874
I need help to understand before my test today
Answer from: msab3253
75 degrees
Step-by-step explanation:
All the angles within a triangle added together equals 180 degrees, so:
x + 25 + 2x - 5 + x = 180
add like terms
4x + 20 = 180
subtract 20 from both sides
4x = 160
divide by 4
x = 40
Now input 4 into the equation for C
2(40) - 5 = 80 - 5 = 75
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