Step-by-step explanation:
easy question answer but I don't do this
What we know:
Constant speed= .6m/s
Force= 350N
Time = 1800 sec
Work=force × distance
What we need to find:
How much work is done in 1800 seconds.
Distance= speed×time
=.6m/s × 1800s=1080 m
Work= 350N × 1080m
=378000 joules
Answer:
(4,4)
Step-by-step explanation:
y = 2x - 4 -------eqn 1
4y = x + 12 ------eqn 2
From eqn 1 y = 2x - 4; insert in eqn 2
4 (2x-4) = x + 12 (open the bracket)
8x - 16 = x + 12 (taking like figures to the same side, sign changes)
8x - x = 12 + 16
7x = 28
x = 28/7
x = 4
From eqn 1
y = 2x - 4
y = 2(4) - 4
y = 8 - 4
y = 4
(x,y) = (4,4)