maybellforever120215
07.10.2019 •
Mathematics
An article reports "attendance dropped 8 precent this year, to 3800." what was the attendance before the drop?
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Ответ:
4,130
Step-by-step explanation:
Hi, to answer this we have to multiply the attendance before the drop (x) by the percentage that assisted after the drop ( 1-0.08) . That expression must be equal to the attendance after the drop (3800)
Mathematically speaking:
8% = 8/100 = 0.08 (decimal form)
x (1-0.08)= 3800
x (0.92) =3800
Solving for x
x = 3800/0.92
x= 4,130
Ответ:
-68 = 2(6)(9)cos(m)
cos(m) = -0.6296
m = arcos ( -0.6296)
m = 129.0 degrees