There are 20 penguins on an iceberg.
9 penguins jump in the water.
8 penguins move to an island.
How many penguins are still on the iceberg?

3 penguins

Step-by-step explanation:

You start off with 20 penguins.

Since 9 penguins jump in the water. You are subtracting 9.

20-9=11

Then, 8 penguins move on to a island so subtract 8 from 11.

11-8=3

Final answer

3

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

answer: y=4000x+14000

step-by-step explanation: