Kinetic energy possessed by moving train is
.
And mass
.
The formula for kinetic energy is
.
Solve for velocity:
Now put in the data:
The given options are:
- (A)x+y = 20
- (B)7 apps and 14 movies
- (C)x-y= 20
- (D)y=-x+ 20
- (E)8 apps and 12 movies
- (F)xy= 20
Answer:
- (A)x+y = 20
- (D)y=-x+ 20
- (E)8 apps and 12 movies
Step-by-step explanation:
If Elizabeth has a combined total of 20 apps and movies.
Where:
Number of apps=x
Number of Movies =y
Then:
Their total,
If we subtract x from both sides
x+y-x=-x+20
In Option E
8 apps and 12 movies add up to 20. Therefore, this could also apply.
Answer:
1/31381059609
Step-by-step explanation:
Words would be "x is smaller than 1"
Algebra would be x < 1
Possible solutions are 0, -1, -2
Hope this helps.