Answer:
A 24
Step-by-step explanation:
Only two triangles:
The 90* angle is stable, so you can change only the position of the 50* and 40* angles.
1 triangle: 40* is right to the 90*
2 triangle: 40* is left to the 90*
Hope this helped you!
Answer: 6x^2 - 9x + 3
Step-by-step explanation:
first, i multiplied the parentheses.
3x x 2x - 3x - 3 x 2x - 3 x (-1)
then, i calculated/multiplied it.
6x^2 - 3x - 6x + 3
finally, i collected the like terms.
6x^2 - 9x + 3
Answer:
v=-2
Step-by-step explanation:
2•v+2=-2
subtract 2 from both sides
2•v=-4
-4÷2=-2
so v=-2
Kinetic energy possessed by moving train is
.
And mass
.
The formula for kinetic energy is
.
Solve for velocity:
Now put in the data:
