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Yanka [14]
3 years ago
14

HELLPPPPPPPPPPPPPPPPPPPPPPPPP

Mathematics
1 answer:
navik [9.2K]3 years ago
5 0

Answer:

more the letter x is often used in algebra to mean a value that is not yet known is is calld a variable or sometimes an unknown. in x+2=7,x is a variable but we can work out its value if we try

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An SRS of 27 students at UH gave an average height of 5.6 feet and a standard deviation of .1 feet.Construct a 90% confidence in
Juliette [100K]

Answer:

Option a) [5.567, 5.633]                

Step-by-step explanation:

We are given the following in the question:  

Sample mean, \bar{x} = 5.6 feet

Sample size, n = 27

Alpha, α = 0.10

Sample standard deviation, s = 0 .1 feet

90% Confidence interval:  

\bar{x} \pm t_{critical}\displaystyle\frac{s}{\sqrt{n}}  

Putting the values, we get,  

t_{critical}\text{ at degree of freedom 26 and}~\alpha_{0.10} = \pm 1.7056  

5.6 \pm 1.7056(\displaystyle\frac{0.1}{\sqrt{27}} ) = 5.6 \pm 0.0328 = (5.5672 ,5.6328) \approx (5.567,5.633)  

Option a) [5.567, 5.633]

7 0
3 years ago
The line plot below displays the fraction of incoming calls answered before the second ring by a group of employees. What fracti
Sonja [21]

Answer:

1/6

Step-by-step explanation:

People who answered less than 1/2 were:  2 +  1 + 3 = 6 people.

There are a total of 36 people.

People who answered their calls before the second ring were only 6/36.

When we simplify the fraction, we get 1/6.

So, the answer is 1/6.

4 0
3 years ago
One number is five more than a second number. The product of the numbers is 3,300. Find the two numbers
krek1111 [17]
A = b+5
ab = 3300
(b+5)b = 3300
b² +5b -3300 = 0  (quadratic formula)
b=55
a=60      (by first relation)
7 0
3 years ago
DO IT AND YOU GET 50 POINTS BUT IF YOU DO BOTH PAGES YOU GET BRAINLEYIST AWNSER.
jeyben [28]

Answer:

23. a-T b-F

24. Words- *3* times the number of *feet*

     Variable- Let *y* represent the number of *yards*

     Model- (I can't do it)

     Expression- The number of feet in*3* yards is given by the expression *3y*

25. 7.8

26. 8.3

27. 14.5

28. Yes. The communitive property tells us that we can switch any two numbers in a multiplication or addition problem

*I did that page like a month ago*

5 0
3 years ago
Read 2 more answers
Rebecca bought some snacks at the bulk food store. She scooped and
oee [108]

Answer:

1.85

Step-by-step explanation:

3 0
3 years ago
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