Afactory tested three machines that make widgets. the table below shows the number of widgets each machine made and
how much time it took
machine machine machine
b
c
time (hours)
4
5
7
number of widgets
32
30
write the number of widgets made per hour for each machine. then determine which machine worked the fastest.
number of widgets made per hour by machine a:
x
5
?
number of widgets made per hour by machine b:
number of widgets made per hour by machine c: 1
select the machine that was the fastest.
machine b
machine c

d

step-by-step explanation:

600,000,000,000, or 6e14

step-by-step explanation:

see explanation

step-by-step explanation:

a

(6r + 7) + (13 + 7r) ( remove brackets and collect like terms )

= 6r + 7 + 13 + 7r

= 13r + 20

b

remove brackets and collect like terms

13 - r - 1 + r

= 12 - r

c

remove brackets and collect like terms

= - 8 - r + 2r - 4

= - 12 + r

d

remove brackets and collect like terms

= 7r - - - 6r

[-   - = - - = - ]

= r -

students group

step-by-step explanation:

a person who   joins a party or a seminar can explain his feelings about that particular occasion better more than anyone else.

as bella managed a show for the students in the school and invited students to watch that show

hence

students group will be the best group to survey to find this information