Answer:
- <u>1. Equation: 2x + 3 = 9x - 11</u>
<u></u>
- <u>2. Each row has 2 chairs</u>
Explanation:
The variable x represents the number of chairs in each row.
<u />
<u>1. She can form 2 rows of a given length with 3 chairs left over.</u>
Thus, she has:
number of rows number of chairs in chairs number of chairs
each row left over she has
2 x 3 2x + 3
<u>2. She can form 9 rows of the same length if she gets 11 more chairs.</u>
That means that she is short in 11 chairs to have 9x chairs, or that she has 11 less chairs than 9x chairs. Then she has:
<u>3. Equation:</u>
Then, number of chairs she has is 2x + 3 and, also, 9x - 11, which allows to set the equation:
<u>4. Solve the equation:</u>
Therefore, each row has 2 chairs, and she has 2x + 3 = 4 + 3 = 7 chairs.
C. mass is protons and neutrons. Both are in the nucleus
<h3><em>Hope</em><em> it</em><em> helps</em><em> you</em><em>.</em></h3>
<em> </em><em> </em><em> </em><em> </em><em>do </em><em>follow</em><em> me</em><em> </em><em>if </em><em>you </em><em>appreciate</em><em> it</em><em> </em>
A) energy is converted from one form to another
