Answer:
The kinetic energy is 20,000\ J
Step-by-step explanation:
The kinetic energy of a body is defined as:
Where <em>m</em> is the mass of the roller coaster car
<em>s</em> is the speed and <em>k</em> is the kinetic energy
We know that 
Then the kinetic energy of the roller coaster car is:
Answer:
The answer is X. because it follows along the line most perfectly.
Answer:
y = 
or -3.571
x = 
or 1.429
Step-by-step explanation:
x - y = 5
x = 5 + y
Solve for y:
y = -6x + 5
y = -6(5 + y) + 5 Substitute x with 5 + y
y = -6(5) - 6y + 5
y = -30 - 6y + 5
y + 6y = -30 + 5
7y = -25
y = or -3.571
Solve for x:
x = 5 + y
x = 5 + -25/7
x = or 1.429
Answer:
Question Number 2 is 20
Question number 3 is 18x-32
Step-by-step explanation:
Answer:
Step-by-step explanation:
-7x-2y=-13
x-2y=11
(subtract the first inequality from the second)
-7x-x = -8x
-2y-(-2y) = 0
-13-11= -24
-8x=-24
x=3
(now place the x value into the second inequality)
3-2y=11
-2y=11-3
-2y=8
y=-4
x=3
y=-4
