Answer:
a) x = 2, y = 1
b) x = 9, y = -9
Step-by-step explanation:
a)
⇒
⇒
and
⇒
⇒
By solving the above two equations, we get;
x = 2 and y = 1
b)
⇒
⇒
and
⇒
⇒
By solving the above two equations, we get;
x = 9 and y = -9
Answer:
Step-by-step explanation:
the volume of a cylinder is given by:
where r is the radius and h is the height.
and the surface area:
the first term is the area of the circles and the second term is the area of the body.
since "The number of volume of a cylinder is half of its number of the total surface area." we will have that:
substitutig the equivalent expressions on each side:
and we simplify and solve for the height (since is the value we don't know of the cylinder):
we substitute the value of the radius , and we get:
thus the volume is: