2 years ago

For the function

" align="absmiddle" class="latex-formula">, what are the coordinates of the vertex?
Is it a maximum or minimum point?

Hint: consider using $x=-b/2a$ . Show all work algebraically

SERIOUS ANSWERS ONLY! NO SPAM!

Mathematics

1 answer:

Gre4nikov [31]2 years ago

8 0

$x_0=\dfrac{-b}{2a} =\dfrac{-4}{2\times(-2)}=1\\y_0=-2\times1^2+4\times1+1=-2+4+1=3\\Answer: The\: vertex\: is \:(1;3). It's\:maximum\:point \:because \:a=-2$

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vovikov84 [41]

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3 years ago

An introductory psychology class has 9 freshman males, 15 freshman females, 8 sophomore males, and 12 sophomore females. A rando

hjlf

Answer:

The probability is $\frac{16}{43}$

Step-by-step explanation:

The psychology class has 9 freshman male, 15 freshman females, 8 sophomore male and 12 sophomore female.

Total population constitution of the class=

17 males and 27 females and 44 students in total.

If on selecting on the first attempt, a male has been picked up then the number of males for the picking up in the second attempt has to decrease by one.

Also, the total number of students from which it has to be selected also decreases by 1, because one child has already been selected.

Therefore for Second Attempt, Total 43 students and 16 males.

Probability= $\frac{No.OfFavorableOutcomes}{TotalNo.OfOutcomes}$