There were 15 marbles in a bag. Each time Dr. Lankford pulled out a marbles she recorded her results and then replaced it in the bag. The results after 40 pulls were 10 blue, 4 red, 12 yellow, and 6 green. How many green marbles could be expected to have been drawn after 140 pulls

the answer is 375 miles

step-by-step explanation:

46

step-by-step explanation:

given

height = 168 cm

formula

height =2.47*f+54.13

solution

168 = 2.47f + 54.13             subtract 54.13 from both sides

168 - 54.13   = 2.47f             combine

113.87 = 2.47f                     divide by 2.47

113.87 / 2.47 = f                   combine

46.1 = f  

answer: 46 cm

add -60 to 120 which will result in : 2x+3y=180

then subtract 2x: 3y=-2x+180

lastly, divide by 2: y= -2/3x+60

hope this is the answer you're looking for: )