A model of a tower block is made with a scale of 1 : 60. The volume of themodel is 36 000 cm3. Calculate the volume of the actual tower block in m3

  7776 m^3

Step-by-step explanation:

The ratio of volumes is the cube of the scale factor. Here, the actual tower has dimensions 60 times those of the model, so the actual volume is ...

  (36,000 cm^3)(60^3) = 7.776·10^9 cm^3

  = 7.776·10^9(10^-2 m)^3

  = 7776 m^3

The actual tower block has a volume of 7776 m^3.

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".

the expression (1.26)2t reveals the approximate rate of increases in the number of plants semiannually.

hope this : )