Answer:
Step-by-step explanation:
Umm
Answer: 2.4
Step-by-step explanation:
S = (3-2) • 180
S = 1 • 180
S = 180
47 + 28 + X = 180
75x = 180
X = 2.4
Rounded = 2
Answer:
56°
Step-by-step explanation:
The two marked angles are supplementary, so total 180°.
(2x +8) +(x -2) = 180
3x +6 = 180 . . . . . . . . . . collect terms
x + 2 = 60 . . . . . . . . . . . divide by 3
x = 58 . . . . . . . . . . . . . . subtract 2
∠DCB = x-2 = 58 -2
∠DCB = 56
<span>30 is 40% of 75 so it should be 45
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