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m_a_m_a [10]
3 years ago
13

Which algebraic expression is equivalent to the expression below 6 parentheses 2x + 7 parentheses -5

Mathematics
1 answer:
Inga [223]3 years ago
8 0
If I understand this, you have the equation 6(2x+7)-5. This is equal to 12x+37. Hope this helps.   
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What is halfway between 400,000 and 500,000?
goldenfox [79]

Answer:

450,000

This is because 400,000 and 500,000 have no other numbers that could be the middle, so it has to be directly in-between both numbers.

__________________________________________________________

Questions related to this topic? Please ask me in the <em>comments</em> box.

4 0
2 years ago
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Amber is on a family cell phone plan with 2 other family members. The family gets 720 shared cell phone minutes a month, each fa
chubhunter [2.5K]

Amber plus 2 family members = 3 total people on the plan.

They share the minutes equally so divide the minutes by 3 to find how many she can use:

720 / 3 = 240 minutes per month.

Now divide the monthly minutes by 30 days:

240 / 30 = 8 minutes per day.

6 0
3 years ago
What type of angles are &lt;5 and &lt;6?
Kisachek [45]

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C

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4 0
2 years ago
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A random sample is taken and the sample size is 25. the sample is normally distributed, the sample mean is 80, and the standard
torisob [31]

The 90% confidence interval for the population mean is 78.1905<x<81.8095

<h3>Confidence interval</h3>

The formula for calculating the confidence interval is expressed as:

CI = x ± z*s/√n

Given the following parameters

mean "x" = 80

z = 1.645

s = 5.5

n = 25

Substitute

CI = 80 ± 1.645*5.5/√25

CI = 80 ± 1.8095

CI = {78.1905, 81.8095}

Hence the 90% confidence interval for the population mean is 78.1905<x<81.8095

Learn more on confidence interval here: brainly.com/question/2141785

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7 0
2 years ago
I'd seriously appreciate it if anyone could help! :) I'll give Brainliest! Please show your work.
san4es73 [151]

The depth of a river changes after a heavy rainstorm. Its depth, in feet, is modeled as a function of time, in hours

y is the depth in feet and x is the time in hours

From the table we can see that

In 9 hours, the depth is 18 feet

In 18 hours , the depth is 21 feet

(9,18 ) and  (18,21)

Average rate of change = \frac{y_2-y_1}{x_2-x_1}

= \frac{21-18}{18-9}

= \frac{3}{9}

= \frac{1}{3}

the average rate of change for the depth of the river is  \frac{1}{3} feet per hour

8 0
3 years ago
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