alvin uses 7 centimeters of tape for every present he wraps .How much tape will alvin need in all to wrap 6 present

42 centimeters.

Step-by-step explanation:

Because he needs to wrap 6 presents and needs 7 centimeters of tape to wrap each present, you multiply 7 and 6 to get the result of 42 centimeters of tape.

he will need 42 centimeters of tape

Step-by-step explanation:

Alvin is wrapping 6 presents, and he uses 7 centimeters of tape per present.

we know that 6 x 7 is 42, therefore he uses 42 centimeters of tape

mr. flanders’ class sold 47 doughnuts and   mr. rodriquez’s class sold 38 cartons of milk

step-by-step explanation:

let x be the number of doughnuts sold by mr. flanders’ class and y be the number of cartons sold by mr. rodriquez’s class.

1. together, the classes sold 85 items, then

x+y=85.

2. both classes earn earned $104.49 for their school. if doughnuts were sold for $1.35 each, then x doughnuts costed $1.35x. if cartons of milk were sold for $1.08 each, then y cartons costed $1.08y. hence,

1.35x+1.08y=104.49.

3. solve the system of two equations: