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steposvetlana [31]
3 years ago
12

Earl worked 18 hours last week. If he had earned $2.00 an hour more but had worked only 15 hours, he would have earned the same

amount. How much per hour does Earl earn? * A) $5.00 B) $10.00 C) $12.00 D) $15.00
Mathematics
2 answers:
blondinia [14]3 years ago
5 0

Answer:

<h2>B) $10.00</h2>

Step-by-step explanation:

x - Earl's earnings per hour

The equation:

18x = 15(x + 2)         <em>use the distributive property</em>

18x = (15)(x) + (15)(2)

18x = 15x + 30        <em>subtract 15x from both sides</em>

18x - 15x = 15x - 15x + 30

3x = 30        <em>divide both sides by 3</em>

3x : 3 = 30 : 3

x = 10

ruslelena [56]3 years ago
3 0

Answer:

B) $10.00

Step-by-step explanation:

10 × 18 = 180

10 + 2 = 12

12 × 15 = 180

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Answer:

Joe makes 5 dollars a week

Step-by-step explanation:

Joe started with 173 so you will subtract that from the total

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You will then divide that number by the number of weeks he has worked

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4 0
3 years ago
Jane’s mobile phone plan charges $0.05 per minute at daytime rates before 8 p.m. and $0.03 per minute at nighttime rates after 8
Sonja [21]

Answer:

minutes at daytime rate: 3.00

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Step-by-step explanation:

split up the hours so you have the 5 cent charge per minute for 1 hour and you have the 3 cents a minute for an hour and a half after 8.

multiply 5 cents a minute by 60 to get the amount of money for the first hour($3.00),

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next add the money together to get $5.70 and multiply that by 1.5 to get $8.55

8 0
3 years ago
When graphing the first line of the system of equations, what do you plot first on the coordinate plane?
olya-2409 [2.1K]

Answer:

Option B, y intercept of -4

Step-by-step explanation:

Option A is incorrect because you cannot use the slope because you don't know where or what point to start from.

<em>Option B is correct because the first thing you do is plot the y intercept of -4 and then you find the slope of the line.</em>

<em />

Option C is incorrect because you cannot use the slope because you don't know where or what point to start from.

Option D is incorrect because that is the wrong y intercept.

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3 years ago
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Answer:

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3 years ago
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