Answer:
Student B is correct
Student A failed to distribute -4 and -6 when opening the brackets in the first step
Step-by-step explanation:
The solution Student A gave was:
2x - 4(3x + 6) = -6(2x + 1) - 4
2x - 12x + 6 = -12x + 1 - 4
-10x + 6 = -12x - 3
2x = -9
x = -4 _1 2 ( -4 1/2)
The solution Student B gave was:
2x - 4(3x + 6) = -6(2x + 1) - 4
2x - 12x - 24 = -12x - 6 - 4
-10x - 24 = -12x - 10
2x = 14
x = 7
Student B is correct.
Explanation of the error:
Student A failed to distribute -4 and -6 when opening the brackets in the first step.
That is,
2x - 4(3x + 6) = -6(2x + 1) - 4
To open this bracket, we will distribute, -4 and -6 so that we get
2x (-4 × 3x) + (-4 × +6) = (-6×2x) + (-6 × +1) - 4
Then we will get
2x -12x -24 = -12x -6 -4
Adding the like terms
-10x - 24 = -12x - 10
Collecting like terms
-10x + 12x = -10 + 24
∴ 2x = 14
x = 14 / 2
Hence,
x = 7
Answer:
x=16/113
Step-by-step explanation:
look at them in order
Answer:
You didn't add a specific time frame so I can you a correct answer.
Explanation:
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The side is 8 feet = 8*12 inches = 96 inches
Plants are needed if they are to be spaced 8 inches apart around the outside of the bed
96/8 = 12 ... so we need 12 plants on each side, please note it is including the corners.
If we not incluse corner, the flowers will be 10 each side.
Means total flower : 10 * 4 (each side) + 4(corner)
The total needed is 44 plants. : Answer
Hope that will help :)
Answer:
The answer would be -5. Hopefully I'm not wrong.
