C
when you put all the equations into slope intercept form and then graph them, answer C will give you the exact same line that is already on the graph. for a system to have infinitely many solutions it would have to be two lines that are exactly the same because they are intersecting an infinite amount of times
Answer:
8 people in the original group.
Step-by-step explanation:
Let x be the number of people who were originally present for the dinner that cost $160. Their average cost per person would be:
$160/x
If 2 more people join, there are x+2 people. Ignoring the awkward situation that they apparently did not order any additional food, they agree to share the cost of the dinner. The average cost is now:
$160/(x+2)
We are told that this new average is now $4 less per person.
$160/(x+2) = ($160/x) - $4
$160 = (($160/x) - $4)(x+2)
x = 8 people
Expand: 4x+8-3x+6
simplify: x+14
Angle of a straight line always sum up to 180 degrees
So what you should do is add the angles that are given to you and then subtract it from 180
Working:
100 + 20 + x = 180
120 + x = 180
x = 180 - 120
x = 60 degrees
I hope this helps you and your welcome
We have:
- 48 km ---------------- 6 liters of cng gas
- 112 km ---------------- ? liters of cng gas
So:
P/s: x is a quantity of cng gas will be needed to go 112 km.
Answer: 14 liters of cng gas
Ok done. Thank to me :>