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Licemer1 [7]
3 years ago
12

Which is an equation of a direct proportion?

Mathematics
1 answer:
kompoz [17]3 years ago
8 0

Answer:

y=-3x

Step-by-step explanation:

The meaning of direct proportion is that the ratio remains the same, and the ratio will only remain the same if y= a constant number into x

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A researcher wants to determine whether the number of minutes adults spend online per day is related to gender. A random sample
suter [353]

Answer:

The expected frequency for the cell E2,2 is = 33

Step-by-step explanation:

The given data is

Gender               | 0-30| 30-60| 60-90| 90+       Totals

Male                    | 23    |    35   |   76    |  46        180

<u> Female               |   31   |    42   |   46    |  16         135    </u>

<u>Totals                    54         77        122    62          315  </u>

<u />

The expected frequency for the cell E2,2 is :

Expected for the (30-60 box for females)   =  Total of (30-6)/ (total )* females

                                                                      = ( 77/315)135= 33

Here p= 77/315 and n= 135

therefor X= pn = 33

χ²=  (33-42)²/33= 2.455  ( for the single value of E2,2=33)

Expected for the (30-60 box for males)   =  Total of (30-6)/ (total )* males

                                                                      = ( 77/315)180= 44

χ²=  (44-42)²/44= 0.09

The critical region is  χ² (0.05) 3 ≥  χ²= 11.34

Let the null and alternate hypothesis be

H0:the number of minutes spent online per day is not related to gender

against

Ha: the number of minutes spent online per day is related to gender

The single value of χ² for E2,2 = 2.45 is less than the critical value of 11.34.  

6 0
2 years ago
Help me solve this problem please
ICE Princess25 [194]

Answer:

actually what is this is you is this a geometry, trigonometry I don't know what to call

8 0
2 years ago
Solve.<br> 4 - 2x = 10<br> A)-7<br> B)-3<br> C)0<br> D)3
mars1129 [50]

Answer: The answer should be B) -3. To solve the equation you have to rewrite the equation.

4 0
3 years ago
The letters for the word SCHOOL are placed in a hat. What is the probability of drawing the letter o out of the hat?
Cerrena [4.2K]

Answer: 2/6 or 1/3

Step-by-step explanation:

SCHOOL has 6 letters in it and two O's. Therefore, it would be 2/6 or simplified it would be 1/3.

That was FUN!

8 0
2 years ago
Five divided by the sum of three times a number and one is equal to 20. find the number
Kipish [7]

Answer:

4

Step-by-step explanation:

5 divided by 3 times

5/5/5=.2

.2*20=4

8 0
3 years ago
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