Which describe unit rates? check all that apply. nadia pays $30 for 2 baseball tickets. a certain type of sailboat travels at 7 nautical miles per hour. the cost of 3 hot chocolates is $2. a summer camp provides 3 meals for each camper.

the anwer is b,d

Step-by-step explanation:

A certain type of sailboat travels at 7 nautical miles per hour.

A summer camp provides 3 meals for each camper.

Step-by-step explanation:

Unit rate shows the number of units of first quantity corresponding to one unit of second quantity,

Nadia pays $30 for 2 baseball tickets.

i.e. the number of dollars is 30 per 2 baseball tickets,

By the above definition,

It is not a unit rate,

A certain type of sailboat travels at 7 nautical miles per hour.

i.e. the number of nautical miles is 7 per 1 hour,

By the above definition,

It is a unit rate,

The cost of 3 hot chocolates is $2.

i.e. the number chocolate is 3 per 2 dollars,

By the above definition,

It is not a unit rate,

A summer camp provides 3 meals for each camper.

i.e. the number of meal is 3 per 1 unit of camper,

By the above definition,

It is a unit rate

answer:

it is general formula that is used to write value to its excet position

a11 a12 a13

a21 a22 a23

it is the example of order 2 by 3 matrix in this

a11 means value occur in 1 st row 1st column

a12 means value occurs in 1st row 2nd column

a13 means value occur in 1st row and 3rd column

a21 means value occurs in 2nd row and 1st column

a22 means value occurs in 2nd row and in 2nd column

a23 means value occurs in 2nd row and in 3rd column