bri9263
05.02.2020 •
Mathematics
The measures of the three angles of a triangle are given by 3x + 1, 2x − 3, and 9x. what is the measure of the smallest angle?
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Ответ:
23°
Step-by-step explanation:
The sum of the 3 angles in a triangle = 180°
Sum the 3 angles and equate to 180
3x + 1 +2x - 3 + 9x = 180 ( simplify left side )
14x - 2 = 180 ( add 2 to both sides )
14x = 182 ( divide both sides by 14 )
x = 13
The 3 angles are
3x + 1 = (3 × 13) + 1 = 39 + 1 = 40°
2x - 3 = (2 × 13) - 3 = 26 - 3 = 23° ← smallest angle
9x = 9 × 13 = 117°
Ответ:
y=x+1
Step-by-step explanation:
Slope, 1x
Y intercept, 1