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jok3333 [9.3K]
3 years ago
7

The scatter plot had a trend line with an equation of y=11x + 12, where y is the total number of retail stores and x is the numb

er of years since 1990. Tracy and her family moved to the city in 2003. Use the equation to predict how many retail stores there were in 2003.
Mathematics
1 answer:
melomori [17]3 years ago
4 0

Answer: 155

Step-by-step explanation:

y=11x+12

2003-1990=13

13×11=143

y=143+12

155=143+12

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Answer:

x = 14

Step-by-step explanation:

To find x, the following equation is generated given the available information:

\frac{(x + 7) + x)}{x + 7} = \frac{12 + 8}{12}

\frac{2x + 7}{x + 7} = \frac{20}{12}

\frac{2x + 7}{x + 7} = \frac{5}{3}

Cross multiply

3(2x + 7) = 5(x + 7)

6x + 21 = 5x + 35

Collect like terms

6x - 5x = - 21 + 35

x = - 21 + 35

x = 14

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Addition will be the last operation
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Irving can I remember the correct order of the five digits on his ID number he does remember that the ID number contains the dig
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Answer: \frac{27}{125}

Step-by-step explanation:

Here the total numbers are 1,  4,  3,  7,  6

Since the total number of possible arrangement = 5\times 5 \times5 \times 5 \times 5=5^5

The total number of the odd numbers in the given numbers = 3

Thus the possible arrangement that the first three digits will be odd numbers = 3\times 3\times 3\times 5\times 5=3^3\times 5^2

Thus, the probability that the first three digits of Irvings ID number will be odd numbers = the possible arrangement that the first three digits will be odd numbers / total possible arrangement =  \frac{3^3\times 5^2}{5^5} = \frac{3^2}{5^{5-2}}

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5 0
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What is different between solving inequalities and absolute value inequalities?
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Answer:

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|a|

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To solve an absolute value equation as

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You begin by making it into two separate equations and then solving them separately.

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or

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An absolute value equation has no solution if the absolute value expression equals a negative number since an absolute value can never be negative.

The inequality

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Whereas the inequality

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You can write an absolute value inequality as a compound inequality.

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You can replace > above with ≥ and < with ≤.

When solving an absolute value inequality it's necessary to first isolate the absolute value expression on one side of the inequality before solving the inequality.

Step-by-step explanation:

Hope this helps :)

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