a quadratic equation in standard form is written ax^2+bx+c=0, where a,b and c are real numbers and a is not zero. true or false
2 answers:
This statement is true. For example:
is an example of a quadratic equation in standard form. a, b, and c are all real numbers, while a ≠ 0.
is another example. a, b, and c are real numbers (b = 0), and a ≠ 0.
would not be an example of a quadratic equation in standard form. a is not a real number.
is not an example because a = 0.
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Answer:
The closest to the maximum profit is
Step-by-step explanation:
From the question we are told that
The mean is
The standard deviation is
The percentage of profit is 20%
Generally the closest to the maximum annual profit at a store where the executives conducted an audit is mathematically evaluated as follows
=>
From the z-table the z-score for 0.20 is
So
=>
Answer:
The first quartile is 61 and the third quartile is 63.
Step-by-step explanation:
From the given dot plot is noticed that
Temperature frequency
59 0
60 2
61 3
62 3
63 4
64 2
65 1
Total 15
It means the data is in the form of
60,60,61,61,61,62,62,62,63,63,63,63,64,64,65
The median of data is middle term. The total number terms is 15. Therefore 7th terms is the median
(60,60,61,61,61,62,62),62,(63,63,63,63,64,64,65)
Now, we have 7 ters before median and 7 terms after median.
First quartile is the middle term of minimum value and median and third quartile is the middle term of maximum value and median.
So, 4th term is first quartile and 12th term is third quartile.
(60,60,61),61,(61,62,62),62,(63,63,63),63,(64,64,65)
Therefore the first quartile is 61 and the third quartile is 63.
