Rational is the correct answer
Answer:
Burning of wood. Melting of ice is a physical change because the water can be frozen back into ice. you cannot un-burn wood. Hope that made sense.
Step-by-step explanation:
Answer:
A=2πrh+2πr2 this is the surface are formula of a cylinder. You already know the scale ratio is 2.5 so the answer is (2.5*surface area formula). For the formula just plug in the values for the radius and the height that is given and solve.
Step-by-step explanation:
Answer:
The greatest common factor is 60x
Answer:
C.
Multiply the first equation by 18; multiply the second equation by 18; add the equations.
D.
Multiply the first equation by − 6; multiply the second equation by 4; add the two equations.
E.
Multiply the first equation by 3; multiply the second equation by − 2;add the two equations.
Step-by-step explanation:
All of these procedures work because they are canceling out the x and y values in both equations.