Two sixth-grade classes are collecting money to buy a present for one of their teachers. One class collected $24.68 and the other
class collected $30.25. About how much money did they
collect in all? The gift they want to buy costs $69.75. About how
much more money do they need?

Vote you brainiest

they need fourteen dollars and thirty-two cents

Step-by-step explanation:

add the money they collected and subtract it by the cost of the item

solution:

→c= a b , that is product of a and b is possible only when when a is m × n matrix and b is n × p matrix.

that is, number of columns of a= number of rows of b.

so, size of matrix , c= a b is , if a = (m × n)matrix

b= (n × p)matrix

then a b = [ (m × n)matrix] ×[   (n × p)matrix ]

→→c= a b= [m × p ] matrix

→→size of product a b will be equal to = number of rows of a × number of columns of b

it would take 7/10 of an hour too fill the pool.

step-by-step explanation: