A quadratic equation is one that is in the form: ax² + bx + c = 0, where a, b and c are constants. Where x is the unknown.
The unknown solutions are 2.
4 Ways to solve the equation are:
i) Factorisation.
ii) Completing the Square Method.
iii) Quadratic Formula Method
iv) Trial and Error
20 hours times $9 is $180. She would have to work over 20 hours to earn more than $180.
I would say 21 hours.
Answer: See below
Explanation:
(2x + 2y)(x - y) + (2x - 2y)(x+y)
= 2(x+y)(x-y) + 2(x-y)(x+y)
= 2(x^2 - y^2) + 2(x^2 - y^2)
= (2 + 2)(x^2 - y^2) (combine like terms)
= 4(x^2 - y^2)
Answer:
10' 11''
Step-by-step explanation:
131 / 12 = 10.1666...
10 * 12 = 120
131 - 120 = 11
12 represents the feet and the remainder, 11, is the inches.
Answer:
It means his IQ score is better than 91% of the other students scores and scored less than only 9% of the other students.
Step-by-step explanation:
Percentile is not the same as percentage. While percentage is the score gotten out of 100, whereas, percentile means that you are scored better than that percentage of people.
Thus, for his IQ score to be in 91st percentile, it means he scored above 91% of the other students, and only scored lesser than 9% of the students.
