crodriguez87
19.04.2021 •
Mathematics
Find the measure of angle b
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Ответ:
127
Step-by-step explanation:
Alt. Interior andgles are congruent
Ответ:
127°
Step-by-step explanation:
The given 127° angle and b are alternate interior angles, so by the AIA (Alternate Interior Angles) Theorem, the angles are congruent. Therefore, m∠b = 127°.
Ответ:
2040 = n/2(20+(n-1)4)
4080 = n(20+4n-4)
4080= 20n +4n^2 -4n
1020 = 4n + n^2
n^2 +4n -1020 =0
use common formula (can't write out so just look at answers. sorry)
which gives answers of n=-34 and n=30. since n can only be positive, n=30 so there are 30 rows. I liked that challenge