Answer:
i think 15
Step-by-step explanation:
2t + j = 80
3(0.5)t + 2(0.5)j = 70
j = 80 - 2t
1.5t + j = 70
1.5t + 80 - 2t = 70
-0.5t = 70 - 80
-0.5t = -10
t = -10/-0.5
t = 20
j = 80 - 2t
j = 80 - 2(20)
j = 80 - 40
j = 40
so ur answer is C
Answer:
If
we get
which is true. so we have a first set of solutions given by
;
Else, if
we can divide both sides by it and we get

Which gives us a second set of solutions given by
;
We can group all solutions (doesn't matter, but it's more elegant!) by writing

Answer:
the correct answer is 14
Step-by-step explanation:
Answer: The slope is 9/2 or 4.5
The y-intercept is 0
The equation of the line is y = 4.5x or 
Step-by-step explanation: Using Slope intercept form, y = mx + b
<u><em>m</em></u> is the slope and <em><u>b</u></em> is the y-intercept.
Slope is rise/run.
The difference in y-values is 225. That is the rise
The difference in x values is 50, so that is the run.
225/50 can be simplified to 9/2 or 4.5
Use the calculated slope and any pair of values from the table to substitute for y and x in the equation and solve for b.
225 = 4.5(50) + b . Multiply mx
225 = 225 + b . Subtract 225 from both sides.
225-225 = b
0 = b
Rewrite the equation in slope-intercept form using the calculated values for <em><u>m</u></em> and<em><u> b</u></em>
When b is 0, it is omitted from the equation.
The resulting equation is
y = 4.5x or 