Tim and Tom are trying to earn money to buy a new game system over a 3 month period Tim saved $45.25 each month if they need a total of $212.91 to buy the new game system how much does Tom need to earn each of the 3 months in order to buy the game system

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18. g

20. h 30 degree turn.

21. d 90 degree angles

and also 19 is a. a sphere not a cirlcle

hope i !

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a = 11 : 4

b = 38

c = 1 for every 6

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