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Marta_Voda [28]
2 years ago
7

3. A cell phone plan costs $0.20 cents per minute. Lisa

Mathematics
2 answers:
kramer2 years ago
4 0

Answer: i think it’s 175 minutes

Step-by-step explanation: i think it’s 175 minutes because if you have 35 dollars for a month then you can set up an equation. 3500 = 20x. i converted the 35 dollars to cents just to make it easier but you could also do 35 = .20x. then just solve the equation by dividing both sides by 20 or .20 and you get 175 i’m not entirely sure tho sorry if i’m wrong hope this helped :D

aksik [14]2 years ago
3 0

Answer:

175 minutes or 2 hrs and 55 minutes

Step-by-step explanation:

35÷0.20 and you'll get 175

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Javier has a job installing windows. He earns a rate of $75 per day plus $8 per window installed. He also receives a stipend of
vichka [17]
75d+8w+25
Part A)
75 and 8 are coefficients because coefficients are the numbers before and multiplied to the variable.
d and w are variables because variables aresymbols to represent the unknown numbers.
25 is the constant because constants are not affected by the variable.
Part B)
75d+8w+25
75(5)+8(48)+25 replace the variables
375+384+25      multiply
        784                add
Part C)
No, because his stipend is a constant, and constants are not affected by the variable.
4 0
3 years ago
A poll asked 1057 American adults if they believe there was a conspiracy in the assassination of President Kennedy, and found th
AVprozaik [17]

Answer:

The 95% confidence interval of the proportion of Americans who believe in the conspiracy is  0.551<  p <  0.610

Step-by-step explanation:

From the question we are told that

   The sample size is  n =1057

   The number that believe there was a conspiracy is  k = 614

Generally the sample proportion is mathematically represented as

      \^ p =  \frac{614}{1057 }

=>   \^ p = 0.5809

From the question we are told the confidence level is  95% , hence the level of significance is    

      \alpha = (100 - 95 ) \%

=>   \alpha = 0.05

Generally from the normal distribution table the critical value  of  \frac{\alpha }{2} is  

   Z_{\frac{\alpha }{2} } =  1.96

Generally the margin of error is mathematically represented as  

     E =  Z_{\frac{\alpha }{2} } * \sqrt{\frac{\^ p (1- \^ p)}{n} }

=>   E = 1.96 * \sqrt{\frac{0.5809 (1- 0.5809)}{1057} }    

=>   E = 0.02975  

Generally 95% confidence interval is mathematically represented as  

      \^ p -E <  p <  \^ p +E

=>    0.5809 - 0.02975<  p <  0.5809 + 0.02975

=>    0.551<  p <  0.610

4 0
3 years ago
What is the answer to 50/100 f $31.46=
FinnZ [79.3K]

Answer:62.92

Step-by-step explanation:

50/100f=.5f ... 31.46/.5=62.92 ... 62.92=f

4 0
3 years ago
What is the value of x?<br><br> A.31<br> B.41<br> C.29<br> D.60
Oksana_A [137]

your answer is c 29. To figure this out take 59-180= 121. Then add 121 and 30 =151. next subtract 151 from 180 and you get C 29

7 0
3 years ago
Whats the answer i realy need help
Fiesta28 [93]
What’s the question
3 0
3 years ago
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