Using quadratic function concepts, it is found that Abby made a mistake on the coordinates of the vertex, which are (-4,1).
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- A quadratic function is defined by:
- The y-intercept is given by point:
- The vertex is given by:
. - The axis of symmetry is:
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The function given is:
- Which is a quadratic equation with:
. 
, thus, the y-intercept is (0, -15).
- Thus, the <u>x-coordinate of the vertex</u> is x = -4, which is the same as the <u>axis of symmetry</u>.
- The vertex is given by: (-4,1).
A similar problem is given at brainly.com/question/14680175
Using it's concept, it is found that the prevalence of frequent multivitamin use is of 0.4523 = 45.23%.
<h3>What is the prevalence of a sample?</h3>
The prevalence of a sample is given by the <u>number of desired outcomes divided by the number of total outcomes</u>.
In this problem, 588 out of 1300 women reported taking a multivitamin at least 4 times a week during the month before pregnant, hence the prevalence is given by:
p = 588/1300 = 0.4523 = 45.23%.
More can be learned about prevalence at brainly.com/question/14398287
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The working out would be-
Pi x radiussquared
Pi x 64 = 201.0619298297468
Rounded to 2 decimal places =
201.06 feet2
Answer:
50 cm
Step-by-step explanation:
4/5 = 40/x
cross multiply
4x=200
x=50
Answer:
you did not provide the numbers to answer any question...
but the formula that you want is probably this one
Combination Formula nCr=n!(n−r)!r!
Step-by-step explanation:
