Answer:
A
Step-by-step explanation:
Hopefully this helps
Answer:
<em>There were 7 adults and 9 children paying tickets to the magic show</em>
Step-by-step explanation:
<u>System of Equations</u>
A system of equations consists of more than one variable related to more than one equation. The question we're working on requires to know two variables: the number of children and the number of adults that paid to a magic show.
Let's call x to the number of adults and y to the number of children. The first condition states there are a total of 16 persons in the group. This can be written as:
[1]
We also know the adult tickets cost $10.50 each and child tickets cost $7.50 each. This means the total amount paid for the tickets is:

We are given this total, thus
[2]
The system formed by [1] and [2] must be solved to answer the question. Let's solve [1] for x:

And substitute x in [2]:

Operating:


Joining like terms and operating on the right side:

Solving:


The value of x is calculated by
x=16-y=16-9

This means there were 7 adults and 9 children paying tickets to the magic show
Answer: Each notebook costs $2.25. (6p = $13.50)
Step-by-step explanation:
You simply have to divide $13.50 by 6 to get the quotient of $2.25. $2.25 indicates the unit rate between the two.
1-
a. 16 b. 81 c.5 d.8
2-
a. 3
b. 30
3-
a. 50.7. b. 729 c. 6.7 d. 7.7
4-
a. 289
b. 2197
5.
a.

b.

6-
a.

b.
![\sqrt{100 } \times \sqrt[3]{64} = 10 \times 4 = 40](https://tex.z-dn.net/?f=%20%5Csqrt%7B100%20%7D%20%20%5Ctimes%20%20%20%5Csqrt%5B3%5D%7B64%7D%20%3D%2010%20%5Ctimes%204%20%3D%2040)
c.

7.

good luck
Answer: If I were you, I would guess 320 students.
Step-by-step explanation:
1.) Think about it, 400 students were asked the same question and 80 chose to fight for lemonade on the school menu. 4/5 or 320 students put Guess.
2.) It's true that 400 students voted, but 80 voted yes, and 320 voted guess.
3.) Further Explanation:
1/5 times 400 equals 80. It's true only 80 students voted yes. 4/5 times 400 equals 320 students voted guess.