Answer:
Slope: -9
y-intercept: (0,5)
Step-by-step explanation:
The slope equation is rise over run. Let's use 2 different points to figure it out. (0,5)(1,-4) So you want to do -4-5 divided by 1-0. The outcome will be -9 over 1. So the answer for slope would be -9. For the y-intercept, you want to find the point on the line where it passes through the y-axis. You would write, (0,5) You wrote 0 for x because it is on the y-axis. I hope this helps!
The formula for t=s/(v₁+v₂), and the value of t is 2 hours.
Step-by-step explanation:
The question is on relative speed.
For the two trains moving towards each other , the relative speed is the sum of their speeds.
Distance between the cities= s miles
Train 1 : speed is v₁ mph
Train 2: speed is v₂ mph
Time of meeting= t
Applying formula for speed, speed =distance/time
Time of meeting= Distance/relative speed
t=s/(v₁+v₂)
Given s=310, v₁=75 and v₂=80, then finding t
t=310/(75+80)
t=310/155 = 2 hrs
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Relative Speed : brainly.com/question/13080364
Keyword : speed
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Answer:
I got 80, but Im not sure.
Step-by-step explanation:
Retail = Cost/(100% - Markup%)
Retail = 64/(100%-20%)
Retail = 64/80%
Retail = 64/.80= $80
