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3 years ago

Elena solved the equation 2(x – 9) = 10 In the following way. What mistake did she make?

Mathematics

2 answers:

dmitriy555 [2]3 years ago

7 0

She subtracted instead of adding.
2x-18=10
You add 18 to both sides
So it would be 2x=28
Then you divide 2 on both sides so x=14

bezimeni [28]3 years ago

4 0

Answer: Subtract 18 on both sides is wrong. Its supposed to be add 18 on both sides.

Step-by-step explanation:

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$
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mrs_skeptik [129]

Answer:

Composition and vertical translation must be done in the parent function.

Step-by-step explanation:

Let be $j(x)$ the parent function, if $g(x) = j(4\cdot x) -27$ , then two transformation must be done in the following order:

Composition

$j \circ h (x) \rightarrow j(h(x))$ , where $h(x) = 4\cdot x$

Vertical translation

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