Question

Which of the following statements is NOT true about the data above?

Answer 1

Step-by-step explanation

A matrix is a rectangular array of numbers arranged into columns and rows

`\begin{bmatrix}{a_(11)} & {a_(21)} & {.} & {a_(1n)} \\ {a_(21)} & {.\text{.}} & {.} & {\square} \\ {a_(31)} & {.\text{.}} & {.\text{.}} & {\square} \\ {a_(41)} & {.\text{.}} & {.\text{.}} & {a_(mn)}\end{bmatrix}`

where m is the number of rows and n is the number of columns

The dimensions of a matrix tells its size: the number of rows and columns of the matrix, in that order.

Step 1

check the dimension of the given functino

rows:5

columns: 4

therefore the matrix is a 5 *4 matrix: true

Step 2

the matrix shows the number of medalls for 5 countries,

we can see that the total for USA is 7, so USA has won the most overall medals in Olumpic soccer :true

Step 3

`C_(3,1)`

it is

rows:3

column 1

we can see the entry for C(3,1) is

3

hence

C) false

Step 4

`C_(4,1)`

it is

rows:4

column 1

it indicates Nigeria has won 1 medal in Olympic soccer

threfo