Answer:
The equation of the parabola is 
, whose real vertex is 
, not 
.
Step-by-step explanation:
A parabola is a second order polynomial. By Fundamental Theorem of Algebra we know that a second order polynomial can be formed when three distinct points are known. From statement we have the following information:
, 
, 
From definition of second order polynomial and the three points described above, we have the following system of linear equations:
(1)
(2)
(3)
The solution of this system is: 
, 
, . Hence, the equation of the parabola is . Lastly, we must check if belongs to the function. If we know that 
, then the value of 
is:
does not belong to the function, the real point is .
Answer:
y=7
Step-by-step explanation:
The slope is (7-7)/(3+7) = 0. So, the line is a horizontal line.
The y value of both points is 7.
Answer:
No it would be a Arithmetic sequence because it’s adding, not multiplying.
Step-by-step explanation:
Arithmetic sequences use addition, so each term is a constant amount (common difference) more or less than the last.
Geometric sequences use multiplication, so each term is multiplied by a constant amount (common ratio) to get the next one.
Plz Brainly :’D
Answer:
B. 4x ≤ 320
Step-by-step explanation:
Not sure how to explain my thinking. However, 4x must be smaller than 320 because she cannot spend more than that.
Hi there! The answer is
A. 252To find the percentage of the customers who preferred the milk chocolate bar we need to know two things:
First we need to know the total amount of customers, which is 50.
Second we need to know how many of these customers preferred the milk chocolate bar. This bar is preferred by 28 people.
Now we can fill in the following formula, in order to find our percentage:
Now we can multiply this percentage by the total amount of chocolate bars which will be bought (which is 450).
Hence, the answer is
A. 252~ Hope this helps you!
