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MakcuM [25]
3 years ago
6

Find the value of the variable

Mathematics
1 answer:
marissa [1.9K]3 years ago
8 0

Answer:

x=13

Step-by-step explanation:

because they're alternate adjacent angles:

5x=78-x

6x=78

x=13

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Organisers for a charity event sold 500 tickets. Adult price £3 and children £2. Money received from adult ticket sales is £400
Tatiana [17]

Answer: 280

<u>Step-by-step explanation:</u>

                  Quantity   X    Cost    =  Money Received

Adult:               x                   3                   3x          

Children:       500-x              2            2(500 - x) = 1000 - 2x


Adult = Children + 400

  3x   =  1000 - 2x + 400

  3x   =   1400 - 2x

  5x   =   1400

    x    =    280

7 0
3 years ago
Jenn buys 4 balls of yarn for a total of $23.78. She pays with two $20 bills. What is her change?
tamaranim1 [39]
Her change will be $16.22 since 20 +20 is 40 and 40 - 23.78 is 16.22
3 0
3 years ago
Read 2 more answers
A jar consists of blue, red and green marbles. The probability of each of them is 2/7 , 3/k and 5/2k. Find the value of k.
jok3333 [9.3K]

Answer:

k = 77/10

Step-by-step explanation:

The jar consist of blue, red and green marbles . The probability of each of them can be described as follows.

probability of blue marbles = 2/7

probability of red marbles = 3/k

probability of green marbles = 5/2k

The sum of the individual probability is equals to 1. Therefore,

2/7 + 3/k + 5/2k = 1

collect like terms

(6 + 5)/2k = 1 - 2/7

11/2k =(7 - 2) /7

11/2k = 5/7

cross multiply

10k = 77

divide both sides by 10

k = 77/10

6 0
3 years ago
M is between N and O . MO = 15, and MN = 76. Find NO
I am Lyosha [343]

Answer:

<h2>                   91        </h2>

Step-by-step explanation:

N___________________<u>M</u>_______O

               76                                 15

NO = MN + MO = 76 + 15 = 91

8 0
3 years ago
HEY GUYS I NEED HELP ASAP PLZZ! 20 points to the person who can give me the right answer first!!
Ivanshal [37]

Answer:

28 inches of the board

3 0
3 years ago
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