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boyakko [2]
3 years ago
8

James thought of a number and divided it by 9.

Mathematics
1 answer:
just olya [345]3 years ago
5 0

The correct answer is A.

Example: 36 divided by 9= 4 and 4 x 9 = 36

Example: 72 divided by 9= 8 and 8 x 9 = 72

Hope this helps.

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Which of the following expressions is equal to tan205°?
disa [49]
Tan205° = .466 tan55° = 1.428 tan25° = .466 -tan25° = " so just tan25
8 0
3 years ago
If 20 were added to each of the vlaues in a data set that originally had a standard deviation of 8, the standard deviation of th
Nitella [24]

Answer:

False (I assume it's a true/false question)

Step-by-step explanation:

Standard deviation measures how spread out the data is.  If you add 8 to all the data values, the distribution of data moves to the right (on a graph) 8 units. The shifted data are no more and no less spread out than before.  The standard deviation does not change.

3 0
3 years ago
1. How many variables are involved in the chi-square test?
GarryVolchara [31]

The result of the respective questions are:

  • This chi-square test only takes into consideration one variable.
  • The  type of chi-square test this is is a Goodness of Fit
  • df= 3
  • NO

<h3>How many variables are involved in the chi-square test?</h3>

a)

This chi-square test only takes into consideration one variable.

b)

The  type of chi-square test this is, is a Goodness of Fit

To test the hypothesis, we must determine whether the actual data conform to the assumed distribution.

The "Goodness-of-Fit" test is a statistical hypothesis test that determines how well the data that was seen resembles the data that was predicted.

c)

Parameter

n = 4

Therefore

Degrees of freedom

df= n - 1

df= 4 - 1

df= 3

d)

In conclusion

Parameters

\alpha = 0.05

df = 3

Hence

Critical value = 7.814728

Test statistic = 6.6

Test statistic < Critical value, .

NO, the result of this test is not statistically significant.

Read more about Probability

brainly.com/question/11234923

#SPJ1

3 0
2 years ago
An airplane left Atlanta with 20 empty seats. If the airplane was 75% full, what was the total number of seats on the airplane?
jek_recluse [69]
Answer is <span>C. 80

hope that helps

75% are full with 20 seats empty so </span>20 seats empty = 25%

75% * 20 / 25%  = 60

8 0
3 years ago
Someone please help me its urgent<br> What is the equation of the directrix
bija089 [108]

Answer:

Step-by-step explanation:

y=-1

6 0
2 years ago
Read 2 more answers
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