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kifflom [539]
3 years ago
15

Solve ... 5x + 4 < 3 - 3x

Mathematics
1 answer:
Romashka-Z-Leto [24]3 years ago
6 0
X< - 1/8 let me know if Uu need work
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A group of 59 randomly selected students have a mean score of 29.5 with a standard deviation of 5.2 on a placement test. What is
BigorU [14]

Answer:

29.5+/-1.11

= ( 28.39, 30.61)

Therefore, the 90% confidence interval (a,b) =( 28.39, 30.61)

Step-by-step explanation:

Confidence interval can be defined as a range of values so defined that there is a specified probability that the value of a parameter lies within it.

The confidence interval of a statistical data can be written as.

x+/-zr/√n

Given that;

Mean x = 29.5

Standard deviation r = 5.2

Number of samples n = 59

Confidence interval = 90%

z-value (at 90% confidence) = 1.645

Substituting the values we have;

29.5+/-1.645(5.2/√59)

29.5+/-1.645(0.676982337100)

29.5+/-1.113635944529

29.5+/-1.11

= ( 28.39, 30.61)

Therefore, the 90% confidence interval (a,b) =( 28.39, 30.61)

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3 years ago
Write a polynomial function of minimum degree with real coefficients whose zeros include those listed. Write the polynomial in s
Gre4nikov [31]

Answer: the first

Step-by-step explanation:

becuase its only right to know you can look it up to

4 0
2 years ago
A cinema has 100 seats if 90 people are inside what percentage of seats are taken
weqwewe [10]

Answer:

90%

Step-by-step explanation:

Since 90/100 seats are taken then we can say;

90/100=9/10=.90*100=90%

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List the factor pairs of 15
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1,15 3,5 are the only factor pairs
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