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Arte-miy333 [17]
3 years ago
11

alana and petra go to a used book sale, where every book is the same price. Alana buys 5 books and Petra buys 4 books. They run

into their friend Angus, who really loves to read, and discover that he has bought 19 books. Angus received a $10 discount, but he still spent $5 more than Alana and Petra combined. How much does one book cost?
Mathematics
1 answer:
Pachacha [2.7K]3 years ago
8 0
After understanding the problem, formulate equations to determine the unknown. Let x be the price of one book. Equating Alana&Petra's expense with Angus' would be

5x + 4x +5 = 19x - 10

The 5 in the left side is needed because Angus' expense is $5 more. Also, the 10 on the right side represents the $10 discount. Solving the equation,

19x = 9x = 5+10
10x = 15
x = $1.5

Therefore, the book costs $1.5. 
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How many solutions are there to the equation below?
Anvisha [2.4K]

We will see that the equation has only one solution, so the correct option is B.

<h3>How many solutions an equation has?</h3>

For an equation of the form:

p(x) = C

Where p(x) is an expression that depends on x, and C is a constant.

The solutions are all the values of x that make the equality true.

For our case, we have:

x = -5

Notice that there is only one value of x that makes the equality true, if we replace x by -5 we get:

-5 = -5

So that is the only solution for the equation, then we conclude that the equation has only one solution, and the correct option is B.

If you want to learn more about equations, you can read:

brainly.com/question/4344214

6 0
2 years ago
17÷338 <br> what is the remainder
Luba_88 [7]

Answer:

Step-by-step explanation:

= 19 R 15

= 19 15/17

338 divided by 17 equals

19 with a remainder of 15

Solution:

   0 1 9

1 7 {3 3 8

 − {0    

   3 3  

 − 1 7  

   1 6 8

 − 1 5 3

     1 5

⊂_ヽ

 \\ _

    \( •_•) F

   < ⌒ヽ A

  /   へ\ B

  /  / \\ U

  レ ノ   ヽ_つ L

 / / O

 / /| U

 ( (ヽ S

 | |、\

 | 丿 \ ⌒)

 | |  ) /

`ノ )  Lノ

6 0
2 years ago
Read 2 more answers
Oh uhh , hey shawty *swaggy Debby Ryan smirk and hair behind ear combo* You lookin mighty swag shawty... would you mind helping
Aleksandr [31]
Why u speaking like that
7 0
2 years ago
Read 2 more answers
(i) Factorise 3(x + 2)^2 - 10(x + 2) + 3
Setler79 [48]
I'm not 100% sure but i think it is 35x+13
8 0
3 years ago
Melissa, Juan, and Rafael served a total of 74 orders Monday at the school cafeteria. Rafael served 2 times as many orders as Ju
Sidana [21]
Let's named variables as M,J and R

The equation is M+J+R=74

We will represent M with J => M=J+6 and R=2J

when we replace in the equation we get

J+6+J+2J=74 => 4J=74-6 => 4J=68 => J=68/4 = 17

J=17  => M=6+17 => M=23  and R=2* 17 => R=34

Final answer is 
Juan served 17 orders
Melissa served 23 orders and 
Rafael served 34 orders

Good luck!!!!


7 0
3 years ago
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