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aliina [53]
3 years ago
12

I need help solving for x the equation is 6x-42=4x

Mathematics
2 answers:
Mashutka [201]3 years ago
5 0
6x - 42 = 4x
6x - 4x -42 = 4x -4x
6x - 4x -42 + 42 = 42
6x - 4x = 42
2x = 42
x = 21
Alenkasestr [34]3 years ago
3 0
6x-42=4x
6x= 4x +42
2x= 42
x=21
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What's the least common denominator of 1/3 5/8 and 1/2?​
Ne4ueva [31]

Answer: The answer is 16.

Step-by-step explanation:

The least common denominator means the same as least common multiple.

3, 6, 9, 12, 16

8, 16

2, 4, 6, 8, 10, 12, 14, 16

6 0
3 years ago
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It is believed that Lake Tahoe Community College (LTCC) Intermediate Algebra students get less than seven hours of sleep per nig
Kitty [74]

Answer: No , at 0.05 level of significance , we have sufficient evidence to reject the claim that LTCC Intermediate Algebra students get less than seven hours of sleep per night, on average.

Step-by-step explanation:

Let \mu denotes the average hours of sleep per night.

As per given , we have

H_0:\mu=7\\H_a:\mu

, since H_a is left-tailed and population standard deviation is unknown, so the test is a left-tailed t -test.

Also , it is given that ,

Sample size : n= 22

Sample mean : \overline{x}=7.24

Sample  standard deviation : s= 1.93

Test statistic : t=\dfrac{\overline{x}-\mu}{\dfrac{s}{\sqrt{n}}}

i.e.  t=\dfrac{7.24-7}{\dfrac{1.93}{\sqrt{22}}}\approx0.58

For significance level \alpha=0.05 and degree of freedom 21 (df=n-1),

Critical t-value for left-tailed test= t_{\alpha, df}=t_{0.05,21}=- 1.7207

Decision : Since the test statistic value (0.58) > critical value  1.7207, it means we are failed to reject the null hypothesis .

[Note : When |t_{cal}|>|t_{cri}|, then we accept the null hypothesis.]

Conclusion: We have sufficient evidence to reject the claim that LTCC Intermediate Algebra students get less than seven hours of sleep per night, on average.

6 0
3 years ago
Hi can someone help me by explaining how to do inverse operations? I need the operations for base and lenght
taurus [48]

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inverse operations (KristaKingMath)

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3 years ago
the administration of community hospital is studying the activity of their cardiovascular telemetry unit, which has 12 beds. dur
hoa [83]

The required  the average daily census for this period is 12.

<h3>What is Average?</h3>

A Average can be characterized as the amount of all numbers isolated by the all out number of values. A mean can be characterized as a normal of the arrangement of values in an example of information. At the end of the day, a normal is likewise called the math mean. It is known as a mean to Depict the average.

<h3 /><h3>According to question:</h3>

there were 2,200 inpatient service days.

Number of days between this period = 184 days

So, average daily census = 2200/184

11.95

⇒ 12 up to whole number.

To know more about average visit:

brainly.com/question/2906096

#SPJ4

6 0
1 year ago
Rank in decreasing order 8.58, 8.508, 7.058, 7.5
8_murik_8 [283]
7.5 8.58 7.058 8.508
8 0
3 years ago
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