Abag contains 18 blue marbles and 12 red marbles. if 2 marbles were removed without being replaced, what is the probability that the first marble will be blue and the second will be red

38.5

step-by-step explanation:

lets say, first number = r

second number = 3r+7

total = 49

(r)+(3r+7)= 49

4r+7 = 49

4r = 42

r = 42/4

r= 10.5

3r+7 = 3(10.5)+7 = 38.5

hope this

she will travel a distance in the range of 3 - 11 miles

the answer is 54 sq. ft. i just did this question, on odyssey ware, and it was right. make brainliest.