Please don’t put any links because they don’t work just write the answer, thank you :)

b is the answer 9/10

D. 19/20 mile

Step-by-step explanation:

Combine the fractions by finding a common denominator.

1/5 --> 4/20

1/4 --> 5/20

1/2 --> 10/20

4 + 5 + 10 = 19

19/20

Maria walked 19/20 of a maile

your answer is 23/2 - 13.5

step-by-step explanation:

7/2 evaluates to

multiply x and 4.5

multiply x and 1

the x just gets copied along.

the answer is x

x

4.5*x evaluates to 4.5x

multiply 3 and 4.5x

multiply 1 and x

the x just gets copied along.

x

4.5*x*3 evaluates to 13.5x

7/2-4.5*x*3 evaluates to

  + 8 =

the answer is

7/2-4.5*x*3+8 evaluates to

people went from manufacturing one object at a time by hand to manufacturing many objects in factories