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FinnZ [79.3K]
3 years ago
10

Plz help!!! Anyone! Plz help me with this question.

Mathematics
2 answers:
Free_Kalibri [48]3 years ago
7 0

Negative means less.

Positive means more.

as a negative # moves farther away from 0, it becomes smaller.

i.e.

-5,-4,-3,-2,-1,0,1,2,3,4,5,6,7

-5 less than 7.

bazaltina [42]3 years ago
5 0

Answer:

it is greater  because positive numbers, either rational or not, are greater than the negative numbers, either rational or not.



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If 7y + 42 <14 then which among the following is true​
lutik1710 [3]

Answer:

y

Step-by-step explanation:

Given

7y + 42

Required

Determine the true statement

<em>Options are not given; but, the question can still be attempted.</em>

<em></em>7y + 42<em></em>

<em></em>

Collect Like Terms

7y < 14 -42

7y < -28

Divide through by 7

\frac{7y}{7} < -\frac{28}{7}

<em></em>y<em> -- This is true</em>

5 0
2 years ago
Mrs. Chin paid a 20 percent tip on the bill for lunch.
dolphi86 [110]

Answer:

I think it's maybe $55.00

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
The proprietor of a boutique in New York wanted to determine the average age of his customers. A random sample of 25 customers r
jolli1 [7]

Answer:

28-2.064\frac{10}{\sqrt{25}}=23.872    

28+2.064\frac{10}{\sqrt{25}}=32.128    

So on this case the 95% confidence interval would be given by (23.9;32.1)  

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=28 represent the sample mean

\mu population mean (variable of interest)

s=10 represent the sample standard deviation

n=25 represent the sample size  

Solution to the problem

The confidence interval for the mean is given by the following formula:

\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}   (1)

In order to calculate the critical value t_{\alpha/2} we need to find first the degrees of freedom, given by:

df=n-1=25-1=24

Since the Confidence is 0.95 or 95%, the value of \alpha=0.05 and \alpha/2 =0.025, and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-T.INV(0.025,24)".And we see that t_{\alpha/2}=2.064

Now we have everything in order to replace into formula (1):

28-2.064\frac{10}{\sqrt{25}}=23.872    

28+2.064\frac{10}{\sqrt{25}}=32.128    

So on this case the 95% confidence interval would be given by (23.9;32.1)    

7 0
3 years ago
In a test (+5) marks are given for every correct answer and (-2) marks are given for every incorrect answer. Radhika answered al
kvv77 [185]

Answer:

10 incorrect answers

Step-by-step explanation:

From the information given, you can say that 5 marks for the number of correct answers minus two marks for the number of incorrect answers is equal to 30 that is the score that Radhika got:

(5*10)-2x= 30, where x is the number of incorrect answers.

Now, you can solve for x:

50-2x=30

50-30=2x

20=2x

x=20/2

x=10

According to this, the answer is that they attempted 10 incorrect answers.

4 0
3 years ago
Can somebody answer the equation-1n+1=11
Natasha2012 [34]
I think that the answer is 8
if you want to check if it is right input 8 in place of b
5 0
3 years ago
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