+0

# how much did polly pay for her pie ingredients

0
118
4

Question : https://prnt.sc/pbzvgh

Continuing for #2

am i correct ?

[3]

5

[2 2 5 4] *    2

[6]

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Sep 28, 2019

#1
+106539
+3

Yep....good job!!!

Now....just perform the multiplication of the two matrices

[ You should end up with the last answer in the resulting 3 x 1 matrix  ]

Sep 28, 2019
#2
0

is the result for the 3 * 1 matrix the answer for #2?

Sep 28, 2019
#3
+106539
+3

To calculate the cost of Polly's ingredients

[ 2 2 5 4 ]  [ 3]

5              =   [ (2(3) + 2(5) + 5(2) + 4(6) ] =  [ 6 + 10 + 10 + 24] =  [ 50]

2

[6]

Notice that this is the last entry in  the matrix  [ 37  ]

92

[  50 ]

To get the cost of  Patricia's ingredients  we would have

[ 6 6 4 6 ] [ 3 ]

5

2

[ 6 ]            The result of this should be 92   [the second entry]

And finally, the cost of Pauline's ingredients is

[ 3 4 1 1 ] [ 3]

5

2

[6 ]        The result of this should be 37  [the first entry ]

Does this make sense ?????

Sep 28, 2019
#4
+1

yes sir thank you !

Sep 28, 2019