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RUDIKE [14]
2 years ago
7

Given the equation 2(3x − 4) = 5x + 6, solve for the variable. Explain each step and justify your process.

Mathematics
1 answer:
blagie [28]2 years ago
6 0
2(3x-4) = 5x+6
First, expand the bracket.
6x-8=5x+6
Next, move the variables to the same side.
x-8=6
Move the -8 to the other side, change to +
x=6+8
x=14
Charlie’s solution is incorrect. When expanding the bracket, he changed the - to a +.
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aleksley [76]

Answer:

The percentage of the markup is 82%

Step-by-step explanation:

In this question, we are asked to calculate the percentage of mark up. This is simply calculating the percentage of the profit margin.

firstly to be able to calculate this percentage, we need to know the value of the profit margin itself.

mathematically, the profit margin is selling price - cost price

From the question, the selling price is $1 while the cost price is 55 cents

The profit margin is thus $1 - 55 cents = 45 cents

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3 years ago
Question 11 (5 points)
Semenov [28]

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8 0
4 years ago
The regression equation for predicting number of speeding tickets (Y) from information about driver age (X) is Y = -.065(X) + 5.
ivolga24 [154]

Answer:

c. 4.27

Step-by-step explanation:

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Therefore, the predicted number of tickets for a twenty-year-old would be 4.27 tickets.

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Read 2 more answers
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