Answer:
B) -8 is the correct answer
<span> In favor Opposed Undecided Total
Grade 9 4 7 7 18
Grade 10 9 11 5 25
Grade 11 12 13 5 30
Grade 12 10 5 12 27
Total 35 36 29 100
</span><span>If the principal randomly selects a student in grade 12 from this survey, the probability that the student is in favor of extending the school day is 0.10 or 10%
Grade 12 and In favor is 10.
Total population is 100.
10/100 = 0.10
0.10 x 100% = 10%</span>
92°. The angles in a triangle always add up to 180°.
A helpful way to remember what the interior angles add up to in any polygon is with this formula:
180 (n - 2), where n is the number of sides.
For example, with a triangle: 180 (3 - 2) = 180 (1) = 180. The interior angles in a triangle all add up to 180.
With a rectangle/quadrilateral: 180 (4 - 2) = 180 (2) = 360.
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Answer:
x = 68°
Step-by-step explanation:
∠ DCB = ∠ EDC = 27° ( alternate angles )
Thus ∠ ECB = 23° + 27° = 50°
The sum of the 3 angles in a triangle = 180°, thus
x = 180° - (62 + 50)° = 180° - 112° = 68°