Answer:
Step-by-step explanation:
He had the incorrect slope for the second line, his line has a positive slope of one while the equation has a slope of negative 1.
x+y=1
y=-x+1
He graphed x+1 instead of -x+1
If he graphed them correctly the lines would intersect when the equations were equal
2x+4=-x+1
3x+4=1
3x=-3
x=-1, making y=2x+4 become
y=2(-1)+4
y=2
So the solution was supposed to be the point (-1,2)
Answer:30x=840 30 represents the number of days and x represents miles per day
b)yes because 30 (28)= 840 miles
c)yes because 30(40)= 1200 miles and the question said at least 840 so it can be more
d)30(11)=330
e) 10,800- 4,015 miles =6785 miles will be saved
Step-by-step explanation:
This is false because on 2) x does not equal 3.
Answer:C
Step-by-step explanation:
Answer:
I'm in class so I'll answer what I can!
1. okay so 25%=40 so to get to 100% we need to multiply 25% by 4 and so we so the same with the number 40x4 equals 160cm
2. so 8k from 20k think of 10k as 50% so it's around 5 per 1k so 8k would be 40% and so 60% would have been spent
3. (I might edit this one later I'm in class :(()
4. so 200cm last year and 240cm this year so it gre by 40cm so it'd be 20% (200=100% so that means it's twice as much as what the % would be!)
5. so 60 is 40% so 30 is 20% so just add up from there 20 x 5 = 100% so 30 x 5 = 150km
