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Bingel [31]
3 years ago
9

Helpppp please!!!!!!!

Mathematics
1 answer:
oksian1 [2.3K]3 years ago
4 0

Answer:

the last one is right by look at the chart

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-12| - |8| = <br><br> answer choices<br><br> A) -4<br><br> B) 4<br><br> C) -20<br><br> D) 20
dedylja [7]

Answer: -4

Step-by-step explanation: Hopefully I put the right answer, the question is worded a bit weird, if it's not please let me know.

-12 - 8 = -4

It's still negative because the positive number is not equal nor greater than the negative number so it's still negative.

3 0
4 years ago
A publisher reports that 31% of their readers own a particular make of car. A marketing executive wants to test the claim that t
Marina86 [1]

Answer:

z=\frac{0.21 -0.31}{\sqrt{\frac{0.31(1-0.31)}{100}}}=-2.162  

Since is a bilateral test the p value would be:  

p_v =2*P(z  

Step-by-step explanation:

Information given

n=100 represent the random sample taken

\hat p=0.21 estimated proportion of the readers owned a particular make of car

p_o=0.31 is the value that we want to test

z would represent the statistic

p_v represent the p value

Hypothesis to test

We need to conduct a hypothesis in order to test if the true proportion is 0.31 or no.:  

Null hypothesis:p=0.31  

Alternative hypothesis:p \neq 0.31  

The statistic is given by:

z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}} (1)  

And replacing we got:

z=\frac{0.21 -0.31}{\sqrt{\frac{0.31(1-0.31)}{100}}}=-2.162  

Since is a bilateral test the p value would be:  

p_v =2*P(z  

8 0
4 years ago
there are 239 people in the first six rows of the movie theater if the same number of people are in the next six rows about how
bija089 [108]

Answer:

478 people

Step-by-step explanation:

All you need to do for this problem is simply multiply 239 by 2. If the first 6 rows are 239 people, and so are the next 6, that's all you need to do.

239*2=478

8 0
3 years ago
Which is correct about the graph's slope?
kozerog [31]
Ah what does this slope look like and what are the options..?
4 0
3 years ago
Read 2 more answers
What is the correct classification of the square root of 18
klio [65]
I would say irrational. Hope this helps!
8 0
3 years ago
Read 2 more answers
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