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rewona [7]
3 years ago
12

VERY EASY, WILL GIVE 50 POINTS FOR CORRECT ANSWER ASAP AND WILL GIVE BRAINLIEST.

Mathematics
1 answer:
Mashutka [201]3 years ago
7 0

Answer:

(80, 120)

Step-by-step explanation:

y - 40 + y = 200

2y = 240

y = 120

x = 120 - 40

x = 80

Hope it helped

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The following is a student’s work when solving for y. There is a mistake in the work. What is the mistake? What is the correct a
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Answer:

Part 1

The mistake is Step 2: P + 2·x = 2·y

Part 2

The correct answer is

Step 2 correction: P - 2·x = 2·y

(P - 2·x)/2 = y

Step-by-step explanation:

Part 1

The student's steps are;

Step 1; P = 2·x + 2·y

Step 2: P + 2·x = 2·y

Step 3: P + 2·x/2 = y

The mistake in the work is in Step 2

The mistake is moving 2·x to the left hand side of the equation by adding 2·x to <em>P </em>to get; P + 2·x = 2·y

Part 2

To correct method to move 2·x to the left hand side of the equation, leaving only 2·y on the right hand side is to subtract 2·x from both sides of the equation as follows;

Step 2 correction: P - 2·x = 2·x + 2·y - 2·x = 2·x - 2·x + 2·y = 2·y

∴ P - 2·x = 2·y

(P - 2·x)/2 = y

y = (P - 2·x)/2

7 0
2 years ago
3.5x-81=360 <br> Please help this is due tomorrow
postnew [5]

Answer:

Step-by-step explanation:

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This might be wrong but there is always a point where you have to try :)

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PLEASE HELP!!!!!
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Answer:

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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Answer:

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