Is this ordered pair a solution of the equation? -2x + y = 4 ( 2 , 7 )

Mathematics

2 answers:

Bumek [7]3 years ago

8 0

The ordered pair (2,7), is not a solution to the equation

AURORKA [14]3 years ago

7 0

Answer:

The answer is no

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How do I work out this question ??

djyliett [7]

Well read the story part of your paragraph. You need to cut out all of the extra stuff and focus on how fast they are going. Then make a chart symbolizing this to find where they directly meet:) If you are able submit the chart with your answer

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2 years ago

Describe and correct any error a student may have made when solving the equation

Lady_Fox [76]

Answer:

The student made an error during the distributive property in the second step where they multiplied 0.15 by -0.2 to equal -0.3 when it should have been -0.03.

Step-by-step explanation:

$0.15(y-0.2)=2-0.5(1-y)\\0.15y-0.03=2-0.5+0.5y\\0.15y-0.03=1.5+0.5y\\100(0.15y-0.03)=100(1.5+0.5y)\\15y-3=150+50y\\15y-3-15y-150=150+50y-15y-150\\-153=35y\\-\frac{153}{35}=y$