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vaieri [72.5K]
3 years ago
15

What is 2x + 5 = 12​

Mathematics
2 answers:
yarga [219]3 years ago
7 0

Answer:

x = 7/2  (or 3 1/2  or 3.5)

Step-by-step explanation:

2x + 5 = 12

2x = 7

x = 7/2  (or 3 1/2  or 3.5)

musickatia [10]3 years ago
3 0

Answer:

3 or 3.5

Step-by-step explanation:

2(3)+5=12

6+5=12

Or

When you want to find x:

2x+5=12

-5=-5

2x=7

2/2x=7/2

3.5x

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Reptile [31]

Answer:

The histogram of the sample incomes will follow the normal curve.

Step-by-step explanation:

According to the Central Limit Theorem if we have an unknown population with mean <em>μ</em> and standard deviation <em>σ</em> and appropriately huge random samples (<em>n</em> > 30) are selected from the population with replacement, then the distribution of the sample mean will be approximately normally distributed.

In this case the researches wants to determine the monthly gross incomes of drivers for a ride sharing company.

He selects a sample of <em>n</em> = 200 drivers and ask them their monthly salary.

As the sample selected is quite large, i.e. <em>n</em> = 200 > 30, the central limit theorem can be applied to approximate the sampling distribution of sample mean by the Normal distribution.

Thus, the histogram of the sample incomes will follow the normal curve.

8 0
3 years ago
A credit card company uses these rules to calculate the minimum amount owed: For a bill of less than $100, the entire amount is
Mashutka [201]

Answer:

B. graph B

Step-by-step explanation:

The graphs of A,B,C and D are attached below.

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For a bill of less than $100, the entire amount is due. That is for 0 ≤ x < $100, y = x

For a bill of at least $100 but less than $500, the minimum due is $100. That is for $100 ≤ x < $500, y = 100

For a bill of at least $500 but less than $1,000, the minimum due is $300. That is for $500 ≤ x < $1000, y = $300

For a bill of $1,000 or more, the minimum due is $500. But the credit limit is $2000. That is For $1000 ≤ x < $2000, y = $500

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3 0
3 years ago
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Step-by-step explanation:

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8 0
2 years ago
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3/6, 1/12, 3/6, 3/60 determine the lcd by division of prime number
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Answer:

LCD = 60

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Step-by-step explanation:

All of the denominator numbers are multiples of 60, and since 60 is also equal to the largest denominator number, it's the LCD.

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3 years ago
Find the missing side or angle.
jolli1 [7]

Answer:

3.7

Step-by-step explanation:

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