Answer:
4 minutes = mile mark 3
8 minutes = mile mark 6
the constant of proportionality is both 3/4 so the answer is 3/4 miles per minute
2/3
Slope=Change of y/ Change of x= proportionality of x and y
Answer:
3
Step-by-step explanation:
substitute -2 in where y is.
the subtraction sign in front of the 3 makes it negative so -3 x -2 is positive 6.
4x+6=18, subtract 6 on both sides.
4x=12
divide 4 on each side.
×=3
7+3 = 10 total marbles
1st pick = 7/10 for a red one
2nd pick = 6/9 reduces to 2/3 for a red one
3rd pick = 3/8 for a white one
7/10 x 2/3 =14/30 reduces to 7/15
7/15 x 3/8 = 21/120 reduces to 7/40
probability = 7/40
