Answer:
Step-by-step explanation:
Filling the given information into the equation gives two equations in two unknowns:
- 11 = m(-2) +b
- -9 = m(3) +b
Subtracting the first equation from the second, we have ...
(-9) -(11) = (3m +b) -(-2m +b)
-20 = 5m . . . . . . simplify
-4 = m . . . . . . . . divide by the coefficient of m
Putting this value of m into the first equation above, we have ...
11 = -2(-4) +b
3 = b . . . . . . . . . subtract 8
The values of m and b are -4 and 3, respectively.
Answer:
s=25
Step-by-step explanation:
8(5s-13)-16(2s+6)=0
40s-104-32s-96=0
40s-32s-104-96=0
8s-104-96=0
8s-200=0
8s=0+200
8s=200
s=200/8
s=25
Answer: Slope is undefined. x=0
slope calculation: -3-4/0-0 = -7/0 and anything divided by 0 is undefined
the x value in the coordinates is 0 so it’s x=0 line.
vertical lines always have undefined slopes
Answer:
7 miles per hour
Step-by-step explanation:
3 1/2 miles = 7/2 miles
1/2 hours= 30 minutes
So,
In 30 mins, travelled 7/2 miles
In 1 min, travelled 7/2 ÷ 30= 7/2× 1/30 = (7×1)/(2×30) = 7/60 miles
In 60 mins, travelled (7×60)/60 miles = 420/60 miles = 7 miles.
Hence, the speed is 7 miles per hour.
Hope this helps :)
2/3 = 8/12
1/4 = 4/12
You start with 8/12 and eat 4/12 so 4/12 (or one quarter) remains.