Answer: The average of two numbers is
.
Explanation:
The first term is,

The second term is,

Average formula is,







Therefore, the average of two numbers is
.
Answer:
x = 6
Step-by-step explanation:
2x + 3 = 4x + -9
2x + 3 = 4x - 9
-2x -2x
3 = 2x - 9
+9 +9
12 = 2x
6 = x
Answer:
x = -3
Step-by-step explanation:
x + 3y = -5
x = -3y - 5
2(-3y - 5) - y = 11
-6y - 10 - y = 11
-7y - 10 = 11
-7y = 21
y = -3
The slope-intercept form of an equation of a line:

m - slope
b - y-intercept
We have the equations in the standard form. Convert to the slope-intercept form:
<em>subtract 3x from both sides</em>

<em>add x to both sides</em>
<em>divide both sides by 3</em>

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We need only two points to plot a graph of each function.

for x = 0 and for x = -3:


for x = 0 and for x = -3:

Look at the picture.
Answer:
y=50x
Step-by-step explanation:
distance = 50 times the laps
100= 50 x 2
200 = 50 x 4
250= 50 x 5
400 = 50 x 8