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jekas [21]
3 years ago
12

Hello Thank you :) y=3x²+10 is this a function? Justify your answer.

Mathematics
1 answer:
ankoles [38]3 years ago
8 0
Yes it’s a function because it has an x value
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Yesterday, the organization sold 69 regular tickets and 40 VIP tickets, raising $12,601. Today, 80 regular tickets and 55 VIP ti
cluponka [151]
Write the equation based on the problem
r stands for the price of a regular ticket, v stands for the price of a VIP ticket.
⇒ 69r + 40v = 12,601
⇒ 80r + 55v = 16,300

Solve  the equation using elimination method.
I'm eliminating v, so I can find the r. We can eliminate v by changing the coefficient of first and second equation into the same number.
69r + 40v = 12,601 (multiply 11)
80r + 55v = 16,300 (multiply 8)
-----------------------------------------
759r + 440v = 138,611
640r + 440v = 130,400
------------------------------ - (substract)
119r             = 8,211
     r             = 69

Subtitute 69 as r to one of the equation and find v
80r + 55v = 16,300
80(69) + 55v = 16,300
5,520 + 55v = 16,300
55v = 10,780
v = 196

So the price of a regular ticket is $69 and the price of a VIP ticket is $196

Find the difference
difference = 196 - 69
difference = 127

The difference is $127

3 0
3 years ago
Read 2 more answers
I need help ASAP I can’t do math for nothing because of the lack of me paying attention to class
timofeeve [1]
The answer should be d
7 0
3 years ago
A baseball coach needs to choose 99 players to be in the batting lineup for the next game. There are 44 freshmen, 44 sophomores,
Bas_tet [7]

Answer:

The number of ways the batting line up can be made is 3,851,971,200 ways.

Step-by-step explanation:

The coach of the baseball team needs to choose 9 players for the batting lineup.

He can choose from a total of 4 freshmen, 4 sophomores, 5 juniors and 4 seniors for the team.

He has to choose the team so that there at most 2 juniors on the lineup.

The total number of available player who are not juniors is 4 + 4 + 4 = 12

i) If the coach selects no juniors then there are 9 positions to fill up and  

 since the batting order is not specific  so these 9 players can be selected

  from 12 players = \binom{12}{9} = 220 ways

ii) If the coach selects one junior then there are other 8 other positions to

   fill up from 12 players and one junior is to be selected from 5 juniors

  = \binom{12}{8}  \times \binom{5}{1} = 2475

iii) If the coach selects two juniors then there are other 7 other positions to

   fill up from 12 players and two juniors are to be selected from 5 juniors

   = \binom{12}{7}  \times \binom{5}{2} = 7920

So the ways of selecting the players is  = 220 + 2475 + 7920 = 10615 ways

Since there is no specific order to the batting line up  the number of ways the batting line up can be made = 9! × 10615 = 3,851,971,200 ways.

8 0
3 years ago
Whats the perimiter of the following rectangle? The side says x - 2 and the bottom says 2x + 1​
irakobra [83]

Answer:

6x-2

Step-by-step explanation:

The perimeter of a rectangle is found by

P = 2(l+w)

  =2( x-2 + 2x+1)

Combine like terms

P = 2(3x-1)

Distribute

P = 6x-2

8 0
3 years ago
Draw a line of fit using (15,25) and (5,35)
seropon [69]

Answer:

your right

Step-by-step explanation:

you had it right nothing to do

8 0
3 years ago
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