Answer:
Step-by-step explanation:
- Identify Like Terms: <em>a</em> and <em>2a</em> are like
- Combine Like Terms: <em>a + 2a = 3a</em>
- Substitute to Form an Expression: <em>3a + 7</em>
Sincerely,
<em>Gigabyte</em>
The circumference of pool is 25.12 feet
<em><u>Solution:</u></em>
Given that round wading pool at the Greenville Community Center has a diameter of 8 feet
Therefore,
Diameter = 8 feet
We know that,
![Radius = \frac{diameter}{2}\\\\Radius = \frac{8}{2}\\\\Radius = 4](https://tex.z-dn.net/?f=Radius%20%3D%20%5Cfrac%7Bdiameter%7D%7B2%7D%5C%5C%5C%5CRadius%20%3D%20%5Cfrac%7B8%7D%7B2%7D%5C%5C%5C%5CRadius%20%3D%204)
Thus radius is 4 feet
<em><u>The circumference of circle is given by formula:</u></em>
![C = 2 \pi r](https://tex.z-dn.net/?f=C%20%3D%202%20%5Cpi%20r)
Where, "r" is the radius of circle
Substitute r = 4
![C = 2 \times 3.14 \times 4\\\\C = 25.12](https://tex.z-dn.net/?f=C%20%3D%202%20%5Ctimes%203.14%20%5Ctimes%204%5C%5C%5C%5CC%20%3D%2025.12)
Thus circumference of pool is 25.12 feet
The equation of the line is y = -2x + 16 which passes through the point (4, 8) and has a slope of -2.
<h3>What is a linear equation?</h3>
It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.
If in the linear equation, one variable is present, then the equation is known as the linear equation in one variable.
It is given that:
The line that passes through the point (4, 8) and has a slope of -2.
On comparing the standard equation:
y = mx + c
Here m is the slope of the line and c is the y-intercept.
m = -2
y = -2x + c
Plug x = 4 and y = 8
8 = -2(4) + c
c = 16
y = -2x + 16
Thus, the equation of the line is y = -2x + 16 which passes through the point (4, 8) and has a slope of -2.
Learn more about the linear equation here:
brainly.com/question/11897796
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