##### Solve using augmented matrices y = 5 5x + 4y = 15

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Solve a system of equations using augmented matrices

Jul 14th, 2015

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y= 5

5x + 4 y = 15

converting to augmented matrix

[ 5           4       15 ]

[ 0           1         5]

second row is already in the converted form , and shows y=5

put this value of y in 5x + 4 y = 15

5 x + 4 * 5 = 15

5x = 15 - 20

x = -5/5

x =   -1

ANSWER IS   y =5  and x= -1..................

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Jul 14th, 2015

Sofie brought chocolate and vanilla cupcakes to school for her birthday. 60 students decided to take a cupcake, and 70% of them picked vanilla. How many people picked a vanilla cupcake?

Aug 11th, 2015

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Jul 14th, 2015
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Jul 14th, 2015
Sep 21st, 2017
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