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Solnce55 [7]
2 years ago
12

Malik’s solution to the equation , when , is shown below.

Mathematics
2 answers:
vova2212 [387]2 years ago
5 0

Answer:

D 60 for x

Step-by-step explanation:

Gala2k [10]2 years ago
4 0

Answer:

Malik substituted 60 for y instead of x

Step-by-step explanation:

<u><em>The complete question is</em></u>

Malik’s solution to the equation ,2/5x-4y=10 when x=60, is shown below.what error did Malik make first when solving the equation ?

Options are

malik did not multiply correctly. malik added 240 to each side of the equation. malik did not multiply correctly. malik substituted 60 for y instead of x

<u>Malik’s solution is</u>

\frac{2}{5}x-4(60)=10\\\frac{2}{5}x=10+240\\\frac{2}{5}x=250\\x=625

we have

\frac{2}{5}x-4y=10

For x=60

substitute the value of x in the equation and solve for y

\frac{2}{5}(60)-4y=10

24-4y=10

4y=24-10

4y=14

y=\frac{14}{4}\\\\ y=\frac{7}{2}

therefore

Malik substituted 60 for y instead of x

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