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xxTIMURxx [149]
3 years ago
12

Answer this and ill give you all my points if you answer them all.

Mathematics
1 answer:
sertanlavr [38]3 years ago
7 0

Answer: its not clear

Step-by-step explanation:

You might be interested in
1. A sample consists of 75 TV sets purchased several years ago. The replacement times of those TV sets have a mean of 8.2 years.
Greeley [361]

Answer:

8.2+/-0.25

= ( 7.95, 8.45) years

the 95% confidence interval (a,b) = (7.95, 8.45) years

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 = 8.2 years

Standard deviation r = 1.1 years

Number of samples n = 75

Confidence interval = 95%

z value(at 95% confidence) = 1.96

Substituting the values we have;

8.2+/-1.96(1.1/√75)

8.2+/-1.96(0.127017059221)

8.2+/-0.248953436074

8.2+/-0.25

= ( 7.95, 8.45)

Therefore the 95% confidence interval (a,b) = (7.95, 8.45) years

3 0
3 years ago
A label prints in the pediatric pharmacy
Elden [556K]

Answer:

107.14 ml of 70% dextrose and 392.86 ml of sterile water should be used.

Step-by-step explanation:

Since a label prints in the pediatric pharmacy satellite for 500 mL of dextrose 15% solution, but this concentration is not available commercially and needs to be compounded, and available in your pharmacy, you have a 1 L bag of sterile water and a 1 L bag of dextrose 70% available to compound the solution, to determine how many mLs of each are needed to make the requested solution, the following calculation must be performed:

500 x 0.15 = 75

100 x 0.70 = 70

A x 0.70 = 75

A = 75 / 0.70

A = 107.14

Therefore, 107.14 ml of 70% dextrose and 392.86 ml of sterile water should be used.

5 0
3 years ago
What is 5p to the -7 power/20p to the 2 power simplified
mr_godi [17]

Answer:

p^(-9) or 1/p^9

Step-by-step explanation:

Here we have:

  (5p)^(-7)

----------------

   (20p)^2

Let's temporarily remove the coefficient 5/20 and reduce it to 1/4.

then we have:

            1                             1               1

(1/4) -------------  = (1/4) -------------- = ------------

       p^7*p^2               p^(7 + 2)         p^9

8 0
4 years ago
So I am confused with the u^(1/2) and the -2u^(-1/2).
monitta
There's no real need to rationalize the denominator in the second term, since

\dfrac2{\sqrt u}=\dfrac2{u^{1/2}}=2u^{-1/2}

and this term is ready to be integrated via the power rule. Rationalizing doesn't really help here.
8 0
3 years ago
I know its hard to see, but if you can see it, can you plz help me with #59. Thnks.
Gnoma [55]
C

A slope of \frac{4}{3} 

 means that for every time x goes up by 3, y goes up by 4.

28 - 22 = 6 which is 2 times 3.
while 10-2 = 8 which is 2 times 4.

This fits the slope.

7 0
3 years ago
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