!ANSWER QUICK! the volume of a cone is 84π ft³. If the hole is 7ft deep, what is the radius of the hole?

6 ft

Step-by-step explanation:

volume of cone πr^2 (h/3)

84π = πr^2 (7/3)

84π/(7/3) = r^2π

84/(7/3) = r^2

sqrt (84 /(7/3)) = r

6 = r

he used the algebra tiles correctly.

step-by-step explanation:

given : 3x(2x-1)

solution :

since he used algebra tiles .

armando's solution is the same in the solution shown in figure

as he distributed 2x into x and x and wrote them vertically

and also write   -1 vertically

and 3x into x and x and x and wrote it horizontally

performing the multiplication in the algebra tiles we get

and solving the given expression :

3x(2x-1)

since solving the expression using tiles   and solving the expression algebraically we get the same answer

thus   we can choose the first statement as the answer to this problem which is "he used the algebra tiles correctly".

"a" determine whether sage found the correct quotient. show your work

step-by-step explanation: