2xsquared-9x+1=0 value of discriminant and number of real solutions
1 answer:
Answer:
• discriminant: 73
• # of real solutions: 2
Step-by-step explanation:
Comparing the equation ...
2x^2 -9x +1 = 0
to the generic form ...
ax^2 +bx +c = 0
we find the coefficient values to be ...
a = 2; b = -9; c = 1
That makes the value of the discriminant, (b^2 -4ac), be ...
(-9)^2 -4(2)(1) = 81 -8 = 73
Since the discriminant is positive, the number of real solutions is 2.
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"13" or "more than 13" rides will make the weekly unlimited pass more cost effective. A further solution is provided below.
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=
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= ($)
hence,
In $32, the minimum number of rides will be:
=
=
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