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nignag [31]
3 years ago
7

I need help solving this 8

Mathematics
2 answers:
ch4aika [34]3 years ago
7 0
8 < x+3 = 8-3 < x =5X+3< 12 = x<12-3 = x<9
vlabodo [156]3 years ago
6 0

Answer:

whats the question?

Step-by-step explanation:


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Solve the inequality below. Use the drop-down menus to describe the solution and its graph.
katrin [286]

Answer: The Solution to inequality is _______ (x < -4). A graph of the solution should have______  (A filled-in circle at -4) and should be shaded to the ____ (left)

Hope this helps! Please people give more explantions like this Y'ALL MAKE IT COMPLICATED! :)

4 0
3 years ago
Write an expression that is equivalent to three over four (5z+ 16)
anygoal [31]
     3
------------
4(5z+16)

I'm assuming you want to include all of the numbers
3 0
3 years ago
Read 2 more answers
Tara and Jody's bedrooms are shaped like rectangles. Tara's bedroom is 9 ft long and 8 ft wide. Jody's bedroom is 7ft long and 1
horrorfan [7]
Tara's Bedroom: A = lw
                           A =  (9)(8)
                           A = 72 ft²

Jody's Bedroom: A = lw
                           A = (7)(10)
                          A = 70 ft²

Tara's bedroom has the greater area than Jody's bedroom.
5 0
3 years ago
One person wants to get a 95% z-confidence interval with a margin of error of at most 15 based on a population standard deviatio
Bess [88]

Answer:

n=(\frac{1.96(60)}{15})^2 =61.46 \approx 62  

So the answer for this case would be n=62 rounded up to the nearest integer  

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".  

The margin of error is the range of values below and above the sample statistic in a confidence interval.  

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".  

\bar X represent the sample mean for the sample  

\mu population mean

\sigma=60 represent the population standard deviation  

n represent the sample size (variable of interest)  

Confidence =95% or 0.95

The margin of error is given by this formula:  

ME=z_{\alpha/2}\frac{\sigma}{\sqrt{n}} (1)  

And on this case we have that ME =15, and we are interested in order to find the value of n, if we solve n from equation (1) we got:  

n=(\frac{z_{\alpha/2} \sigma}{ME})^2 (2)  

The critical value for 95% of confidence interval is provided, z_{\alpha/2}=1.96, replacing into formula (2) we got:  

n=(\frac{1.96(60)}{15})^2 =61.46 \approx 62  

So the answer for this case would be n=62 rounded up to the nearest integer  

6 0
3 years ago
3x^2+11x+6 in factor form
Novosadov [1.4K]

Answer: (3x+2)(x+3)

Step-by-step explanation: Factor by grouping.

I hope this helps you out.

8 0
3 years ago
Read 2 more answers
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