Juana went shopping with $ 50 and spent $ 45. What percentage of her money did she spend?
2 answers:
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The given question can be solve using quadratic formula.
The correct option is (c) .
Given:
The given equation is,
---------------------------(1)
Write the general quadratic equation.
Write the quadratic formula.
------------------------------- (2)
Compare equation (1) and (2).
Substitute the value of ,
and
in general quadratic.
Subtract from each side of above equation.
Thus, the correct option is (c) .
Learn more about quadratic equation here:
d1 = ax + by + c = 0 and d2= mx + ky + f = 0
if they are parallel :
8x + 2y = 7
8x + 2y - 7 = 0
- 8x + 2y -9 = 0
- 4x + y -6 = 0
- 16x + 4y - 19 = 0
you can create more whatever you want =)
Hope this helps ^-^