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Yanka [14]
3 years ago
7

Nina knows that the average of the x-intercepts represents the line of symmetry for a quadratic function through the x-axis. Whi

ch equation represents the average of the x-intercepts for f(x) = 4x2 – 24x + 20? = –3 = –4 = 3 = 4
Mathematics
2 answers:
Ghella [55]3 years ago
5 0

Answer:

To get the x-intercepts of the function, f(x) = 4x2 – 24x + 20

It has to be equated to zero and the values of x are the x-intercepts. So,

4x2 – 24x + 20 = 0

The resulting equation is a quadratic equation which can be solved by different methods. The solution is

x = 5, 1

The average therefore is:

(1+5/)2 = 3

slavikrds [6]3 years ago
4 0

Answer:

1 + 5/2  = 3

Step-by-step explanation:

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3 years ago
The first three cards dealt from a
mart [117]
There are four aces, 12 face cards and 4 7s in a standard 52 card deck. The probability of getting an ace on the first draw is 4/52 or 1/13. For the second draw there are now 51 cards in the deck (assuming the draws are without replacement), so the probability of getting a face card is 12/51. Given an ace and a face card on the first two draws, the probability of a 7 on the third draw is 4/50 or 2/25. The probability of getting all three is 1/13*12/51*2/25.
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Related Questions (More Answers Below)
5 0
3 years ago
The price of a DVD, including 5% sales tax is $21.15. What us the price of the DVD, before sales tax?​
AfilCa [17]

Answer:

20.14

Step-by-step explanation:

21.15 - 5%(1.01) = 20.14

6 0
3 years ago
Can 7 go into 42 and 91
Misha Larkins [42]
7 times 6 is 42
91 divided by 7 is 13
7 0
3 years ago
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the theaters sell tickets for a concert. tickets for the lower level are $35 each and tickets for the upper level are $25 each.
nasty-shy [4]
Equation 1 for tickets sold:
$35x + $25y = $10,250

Equation 2 for quantity (number #) of tickets sold:
x + y = 350

Use substitution method:

y = 350 - x

35x + 25 (350 - x) = $10,250

35x + $8750 - 25x = $10,250

10x + $8750 = $10,250
- $8,750 -$8,750

10x = 1,500

x = 150

y = 350 - 150

y = 200

Check the answers:

$35 (150) + $25 (200) =

$5,250 + $5,000 = $10,250
4 0
3 years ago
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