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Leviafan [203]
3 years ago
7

Geometry: CC 2015 > Chapter 9: Chapter 9 Test > Chapter Test 9

Mathematics
1 answer:
Katena32 [7]3 years ago
5 0

Answer:

ohk where is test

Step-by-step explanation:

and question

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Solve the equation below:
Agata [3.3K]
\sqrt[3]{x^2-8}=2 \\ x^2-8=2^3=8  \\ x^2=16 \\  \\ \boxed{x=4 \ or \ -4}
6 0
3 years ago
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In the July 2007 issue, Consumer Reports examined the calorie content of two kinds of hot dogs: meat (usually a mixture of pork,
kifflom [539]

Answer:

Since we FAIL to reject the null hypothesis, then if we construct an interval of 95% of confidence, the 0 should be included, because on the test hypothesis we conclude that there would be no significant difference between the means of the two groups analyzed, and the results obtained on the hypothesis test needs to be consistent with the confidence interval.

Step-by-step explanation:

A hypothesis is defined as "a speculation or theory based on insufficient evidence that lends itself to further testing and experimentation. With further testing, a hypothesis can usually be proven true or false".  

The null hypothesis is defined as "a hypothesis that says there is no statistical significance between the two variables in the hypothesis. It is the hypothesis that the researcher is trying to disprove".

The alternative hypothesis is "just the inverse, or opposite, of the null hypothesis. It is the hypothesis that researcher is trying to prove".

\bar x_{meat}=111.7 represent the sample mean of calories for the meat hot dogs

\bar x_{beef}=135.4 represent the sample mean of calories for the beef hot dogs

The system of hypothesis on this case would be:

Null hypothesis: \mu_{meat}-\mu_{beef}=0

Alternative hypothesis: \mu_{meat}-\mu_{beef}\neq 0

On this case we have the p value obtained, after calculate the statistic and we got that p_v =0.124 if we select a 5% significance level \alpha=0.05 we see that p_v >\alpha and on this case we can FAIL to rejec the null hypothesis, so there is not a significant difference between the mean of the two tpes of hot dogs analyzed at 5% of significance.

And since we FAIL to reject the null hypothesis, then if we construct an interval of 95% of confidence, the 0 should be included, because on the test hypothesis we conclude that there would be no significant difference between the means of the two groups analyzed, and the results obtained on the hypothesis test needs to be consistent with the confidence interval.

8 0
3 years ago
The following list shows the items and prices for a restaurant order. Calculate the total amount if there is a 7% tax and the cu
ziro4ka [17]

Answer :  b. $65.10

1 appetizer: $7.39=7.39

2 entrees: $16.99 each=  2 * 16.99=33.98

1 dessert: $5.29= 5.29

2 drinks: $2.30 each=4.6

cost = 7.39 + 33.98 + 5.29 + 4.6 =$51.26

7% tax = 51.26 * 0.07 = 3.5882

20% gratuity = 51.26 * 0.2= 10.252

Total cost = 51.26 + 3.5882 + 10.252 =65.1002

the total amount = $65.1

6 0
3 years ago
Read 2 more answers
One positive integer is 5 times another positive integer and their product is 320. What are the positive integers?​
NeTakaya
Answer by CubeyThePenguin(3113) (Show Source): You can put this solution on YOUR website!
x = 5y
xy = 320

Substitute the first equation into the second equation
(5y)(y) = 320
5y^2 = 320
y^2 = 64
y = 8 (y must be positive)

The integers are (x, y) = (40, 8).
7 0
3 years ago
Enter the degree form for 3π/4 radians in the box.
Paraphin [41]

Answer:

135 degrees

Step-by-step explanation:

2π radians is the central angle of a full circle, so 2π radians is 360 degrees.

That means that π radians = 180 degrees.

3π/4 radians * (180 degrees)/(π radians) = 135 degrees

3 0
3 years ago
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