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yulyashka [42]
3 years ago
9

Which of the following statements are TRUE about quadratic functions:

Mathematics
1 answer:
-Dominant- [34]3 years ago
8 0

Number 2 and 4 are true about quadratic functions

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At homecoming, 125 tickets where sold. Tickets purchased for homecoming cost $20.5 without an activity card, and $15.75 with an
ale4655 [162]

Answer:

Nearly 83 students did not had activity card.

Nearly 42 students had an activity card.

Step-by-step explanation:

Total number of tickets sold at homecoming = 125

Cost of each  ticket without activity card = $20.5

Cost of each  ticket with activity card = $15.75

Total amount earned  = $2365

Let, the number of tickets sold without activity car d  = k

So, the number of tickets sold without card = (Total sold - k)

                                                                          = 125 - k

Now, according to the question:

$20.5(k) + $15.75(125 - k)  =  $2365

or, 20.5 k + 1968.5 - 15.75 k = 2365

⇒ 4.75 k = 2365 - 1968.5 = 396.5

⇒ k = \frac{396.5}{4.75 }  = 83.47

Hence, nearly 83 students did not had activity card.

So,the number of students that had activity card = 125 - 83.47 = 41.53 ~  42

Hence, nearly 42 students had an activity card.

4 0
3 years ago
Which pair shows equivalent expressions?
choli [55]

Answer: A

3(x+2) = 3x+6

Multiply 3 with x and 2.

6 0
3 years ago
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A clown creates an equation that relates his data of each child´s head size to the length of the balloon he needs to make them a
Mashcka [7]

Answer:

If x is the size of the child's head, 5 times that would be 5x and "plus 4/5" is + 4/5 so the equation is y = 5x + 4/5.

5 0
3 years ago
Help extra points please !
blsea [12.9K]

Answer:

C. -1 is less than x

Step-by-step explanation:

-3 < 4x + 1

-3-1 < 4x +(1 -1)

-4 < 4x

-4/4 < 4x/4

-1 < x

6 0
3 years ago
What is the absolute deviation of 4 in this data set?
lakkis [162]

Answer:

7

Step-by-step explanation:

I took the k12 quiz

6 0
3 years ago
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