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kp328
26.10.2020 •
Mathematics
The ratio of the male and female teachers is 3:4 in Aadarsh H.S. School. If the number
of male teachers is 12, find the number of female teachers.
d)
7
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Ответ:
there is 16 female teachers because 4 * 4 is 14
Ответ:
male is eqaul to 12
so therefore female is eqaul to 3/4*12=9
Ответ:
x^2 - 4x - 12 = 0, use the quadratic equation
Solve for x over the real numbers:
(x - 6) (x + 2) = 0
Split into two equations:
x - 6 = 0 or x + 2 = 0
Add 6 to both sides:
x = 6 or x + 2 = 0
Subtract 2 from both sides:
x = 6 (or x = -2 only positive solution)