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Hank's work to solve the equation 25=x4−9 is shown below. In which step did Hank make a mistake, and what mistake did he make?...Question
Hank's work to solve the equation 25=x4−9
is shown below. In which step did Hank make a mistake, and what mistake did he make?
25=x4−9
Step 1: 16=x4
Step 2: x=64
(1 point)
Responses
Hank made a mistake in Step 2. The second step needed to solve this correctly would be to divide both sides of the equation by 4. Hank multiplied by 4 instead of dividing.
Hank made a mistake in Step 2. The second step needed to solve this correctly would be to divide both sides of the equation by 4. Hank multiplied by 4 instead of dividing.
Hank made a mistake in Step 1. The first step needed to solve this correctly would be to add 9 to both sides of the equation. Hank subtracted 9 instead of adding 9.
Hank made a mistake in Step 1. The first step needed to solve this correctly would be to add 9 to both sides of the equation. Hank subtracted 9 instead of adding 9.
Hank made a mistake in Step 2. The second step needed to solve this correctly would be to subtract 9 to both sides of the equation. Hank added 9 instead of subtracting 9.
Hank made a mistake in Step 2. The second step needed to solve this correctly would be to subtract 9 to both sides of the equation. Hank added 9 instead of subtracting 9.
Hank made a mistake in Step 1. The first step needed to solve this correctly would be to multiply both sides of the equation by 4. Hank divided by 4 instead of multiplying.
is shown below. In which step did Hank make a mistake, and what mistake did he make?
25=x4−9
Step 1: 16=x4
Step 2: x=64
(1 point)
Responses
Hank made a mistake in Step 2. The second step needed to solve this correctly would be to divide both sides of the equation by 4. Hank multiplied by 4 instead of dividing.
Hank made a mistake in Step 2. The second step needed to solve this correctly would be to divide both sides of the equation by 4. Hank multiplied by 4 instead of dividing.
Hank made a mistake in Step 1. The first step needed to solve this correctly would be to add 9 to both sides of the equation. Hank subtracted 9 instead of adding 9.
Hank made a mistake in Step 1. The first step needed to solve this correctly would be to add 9 to both sides of the equation. Hank subtracted 9 instead of adding 9.
Hank made a mistake in Step 2. The second step needed to solve this correctly would be to subtract 9 to both sides of the equation. Hank added 9 instead of subtracting 9.
Hank made a mistake in Step 2. The second step needed to solve this correctly would be to subtract 9 to both sides of the equation. Hank added 9 instead of subtracting 9.
Hank made a mistake in Step 1. The first step needed to solve this correctly would be to multiply both sides of the equation by 4. Hank divided by 4 instead of multiplying.
Answers
There are no human answers yet.
Answered by
GPT-4o mini
To analyze Hank's work, let's take a closer look at the steps he provided to solve the equation \( 25 = x^4 - 9 \).
1. Starting with the original equation:
\[
25 = x^4 - 9
\]
2. In his Step 1, Hank claims to have simplified this to:
\[
16 = x^4
\]
However, to go from \( 25 = x^4 - 9 \) to an equivalent equation, you should add 9 to both sides of the equation, not subtract it. The correct first step would be:
\[
25 + 9 = x^4
\]
or
\[
34 = x^4
\]
3. In Step 2, Hank then solves for \( x \):
\[
x = 64
\]
This would be correct if \( x^4 \) were 64, but since he made a mistake in Step 1, the value of \( x \) is also incorrect.
Given this analysis, the mistake is in Step 1. The first step needed to solve this correctly would be to add 9 to both sides of the equation, but Hank subtracted 9 instead.
Therefore, the correct response is:
**Hank made a mistake in Step 1. The first step needed to solve this correctly would be to add 9 to both sides of the equation. Hank subtracted 9 instead of adding 9.**
1. Starting with the original equation:
\[
25 = x^4 - 9
\]
2. In his Step 1, Hank claims to have simplified this to:
\[
16 = x^4
\]
However, to go from \( 25 = x^4 - 9 \) to an equivalent equation, you should add 9 to both sides of the equation, not subtract it. The correct first step would be:
\[
25 + 9 = x^4
\]
or
\[
34 = x^4
\]
3. In Step 2, Hank then solves for \( x \):
\[
x = 64
\]
This would be correct if \( x^4 \) were 64, but since he made a mistake in Step 1, the value of \( x \) is also incorrect.
Given this analysis, the mistake is in Step 1. The first step needed to solve this correctly would be to add 9 to both sides of the equation, but Hank subtracted 9 instead.
Therefore, the correct response is:
**Hank made a mistake in Step 1. The first step needed to solve this correctly would be to add 9 to both sides of the equation. Hank subtracted 9 instead of adding 9.**
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