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MakcuM [25]
3 years ago
7

What is the value of -17 - (-1) + 2/3 + -1/2?

Mathematics
1 answer:
netineya [11]3 years ago
6 0

Answer:

-95/6 or -15.83 repeating

Step-by-step explanation:

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In a particular​ year, a total of 40 comma 285 students studied in two of the most popular host countries when traveling abroad.
klasskru [66]

Answer: 2nd most popular country =  15895 students

most popular country = 24390 students

Step-by-step explanation:

Total students: 40,285

2nd most popular country = x students

most popular country = x + 8,495 students

x + x + 8495 = 40285

2x + 8495 = 40285

2x = 40285 - 8495

2x = 31790

x = 15895

2nd most popular country = x = 15895 students

most popular country = x + 8,495 = 15895 + 8,495 = 24390 students

6 0
3 years ago
Sara got fast food for lunch. She paid $1.12 on soup and $5.47 on a hotdog with a $20 bill. What was the change from the purchas
leonid [27]

Answer: 13.41$


Step-by-step explanation:


6 0
3 years ago
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A particular battery claims to have a mean life of 400 hours with a standard deviation of 30 hours. Approximately what percent o
Svetach [21]

Using the normal distribution, it is found that 25.14% of the batteries will last more than 420 hours.

<h3>Normal Probability Distribution</h3>

The z-score of a measure X of a normally distributed variable with mean \mu and standard deviation \sigma is given by:

Z = \frac{X - \mu}{\sigma}

  • The z-score measures how many standard deviations the measure is above or below the mean.
  • Looking at the z-score table, the p-value associated with this z-score is found, which is the percentile of X.

In this problem, we have that the mean and the standard deviation are given, respectively, by:

\mu = 400, \sigma = 30.

The proportion of the batteries will last more than 420 hours is <u>one subtracted by the p-value of Z when X = 420</u>, hence:

Z = \frac{X - \mu}{\sigma}

Z = \frac{420 - 400}{30}

Z = 0.67

Z = 0.67 has a p-value of 0.7486.

1 - 0.7486 = 0.2514.

0.2514 = 25.14% of the batteries will last more than 420 hours.

More can be learned about the normal distribution at brainly.com/question/24663213

#SPJ1

3 0
1 year ago
Nathan is saving up to buy a new phone. He already has $90 and can save an additional $10 per week using money from his after sc
Galina-37 [17]

Answer:

$130

Step-by-step explanation:

If Nathan already has $90 then you would add the amount of money collected after the 4 weeks. In each week he makes $10.

The equation would be $90+($10x4)= $X

5 0
2 years ago
Last month a car dealership sold 80 cats. Of all cars sold 15% of them were red how many cars that were sold were red
telo118 [61]

Answer:

12

Step-by-step explanation:

Multiply 80 by .15

5 0
2 years ago
Read 2 more answers
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