What is the interquartile range of the data set? {48, 50, 65, 60, 80, 42, 45, 50, 42, 55, 45}

Step-by-step explanation:

Given : Data set  {48, 50, 65, 60, 80, 42, 45, 50, 42, 55, 45}.

To find : What is the interquartile range of the data set?

Solution : We have Data set  {48, 50, 65, 60, 80, 42, 45, 50, 42, 55, 45}.

Order the number:

42,42,45,45,48,50,50,55,60,65,80 .

Median : (42,42,45,45,48),50,(50,55,60,65,80 ).

50 is the median .

Median of first quartile Q1 : 45.

Median of second quartile Q2 : 60.

interquartile range = Q2-Q1  = 60-45 = 15.

Therefore, Interquartile range is 15.

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".

3.how is solving radical equations different than solving linear equations?

step-by-step explanation: