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Natalija [7]
3 years ago
9

Need some help please

Mathematics
1 answer:
Eddi Din [679]3 years ago
3 0

Answer:

-0.83 is the answer

Step-by-step explanation:

hope it was useful

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Tan (25pi/2) = ___<br><br> A). 1<br> B). 0<br> C). -1<br> D). Undefined
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A.) 1
Type it in your calc. to find
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The amount of fat, in grams, in granola is proportional to the volume, in cups, of the granola as shown on the graph.
AlekseyPX
4 cups = 18 g
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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

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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
2 years ago
Determine the circumference of<br>a circle with diameter 28 cm. Show your work​
gulaghasi [49]

Answer:

Step-by-step explanation:

Diameter = 28 cm

therefore, radius = 28 / 2 = 14 cm

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= 2 × 22 / 7 × 14

= <u><em>88 cm</em></u>

Hope this helps

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Answer:

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Step-by-step explanation:

2/32 = 1/16 gallons per mile WRONG

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