asher456581
19.03.2020 •
Mathematics
16n2 – 10n – 5 = 6n
Solve the equation for all real solutions
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Ответ:
n=5/4 or n=-1/4
Step-by-step explanation:
16n^2 - 10n-5=6n
16n^2-16n-5=0
(4n)^2-2.4n.2+2^2 = 2^2 + 5
(4n- 2)^2=9
4n-2 = 3 or 4n-2=-3
4n=5 or 4n=-1
n=5/4 or n = - 1/4
Ответ:
m<1 = 20°
Step-by-step explanation:
m<L = m<Z = 70°
=> m<1 = 180° - 90° - m<Z
=> m<1 = 180° - 90° - 70°
=> m<1 = 20°