Multiply the first equation by -2. It turns into 4x+18y=50 and the other one stays -4x-9y=-23. Then you "eliminate" the equations by "adding" them. Set it up like this:
4x+18y=50
+
-4x-9y=-23
4x-4x= 0. 18y-9y= 9y and 50-23= 27
SO: 9y= 27 and y= 3
And then you plug that in to one equation: 4x +18(3)= 50. 4x= 50-(18*3)
4x= -4, so x=-1.
Plug it back in to check!
Hope this helps. Happy solving! :)
Kinetic energy is the energy of an object in motion.
The tennis ball would create kinetic energy as it was both traveling up to it's maximum height and as it was falling back down to the ground.
Because of gravity, the kinetic force would be greater as it was falling back to the ground though.
The answer would be B) just before it reaches the ground.
Answer: is there any pictures that we need to answer the question or no?
Step-by-step explanation:
7x-y=14 :add 'y' to both sides
7x=14+y :divide both sides by 7
x=(14+y)/7 or x=2+(y/7)
<em>The</em><em> </em><em>value</em><em> </em><em>of</em><em> </em><em>5x</em><em> </em><em>in</em><em> </em><em>square</em><em> </em><em>is</em><em> </em><em>3</em><em> </em>
