Answer:
-4
Step-by-step explanation:
-3r+9=-4r+5
-3r+4r=5-9
r=-4
Answer:
True
I hope this will Help you
Answer:
28
Step-by-step explanation:
you add 21, 4, and 3 to find the total
then you find how many are white or gray
7/28= 1/3
1/3 times 84
84 times 1 divided by 3
84/3
Shown in the figure below
<h2>
Explanation:</h2>
First of all, we have the following equation:

This is the equation of a line given in Slope-intercept form as the form:

So this line passes through the point
which is the y-intercept. To graph this line, we'd need another point. So let set
:

So another point is:

Finally, we graph a line that passes through these two points:

This is shown in the figure below.
<h2>Learn more:</h2>
Graph of a line: brainly.com/question/13772202#
#LearnWithBrainly
Y=2x-4
You add 8x to both sides
Making it
4y=8x-16
Then you divide both sides by 4
Making it
y=2x-4