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3 years ago

PLEASE HELP!! Thank you!!!!

Mathematics

1 answer:

SVEN [57.7K]3 years ago

6 0

Answer:

The answer to your question is

Step-by-step explanation:

Data

4x - 8y = -16 ------------ (I)

x - 2y = - 8 ------------ (II)

a) Solve equation II for x

x = 2y - 8

Substitute x in equation I

4(2y - 8) - 8y = -16

8y - 32 - 8y = -16

8y - 8y = 32 - 16

0 = 16 The system has no solution because y was

cancelled.

b) When a system of equations do not have solution means that the lines are parallels and different.

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Archy [21]

Answer:

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Step-by-step explanation:

Start by defining the variables that we are going to use throughout our working:

Let the current age of Wei Ling and Wei Xuan be L and X years old respectively.

Next, form equations using the given information.

5 years ago

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Wei Xuan: (X -5) years old

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Expand:

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Wei Xuan: (X +9) years old

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6X= 15L -45 -----(3)

(2) ×2:

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6X -6X= 15L -45 -(8L +18)

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Substitute L= 9 into (1):

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