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Nutka1998 [239]
3 years ago
7

Please help right now

Mathematics
2 answers:
Lelu [443]3 years ago
4 0

Answer:

5 and 6

Step-by-step explanation:

Alex3 years ago
3 0

Step-by-step explanation:

\sqrt{26} is \: between 5.0and5.1

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The sum of two numbers is 26. One number is<br> 9 more than the other one. Find the numbers.
rusak2 [61]

Answer:

Step-by-step explanation:

x+y=26

x-y=9

by process of elemination

2x=35

x=17.5

17.5+y=26

y=8.5

3 0
3 years ago
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
Anyone can help me with problem 3?
Fudgin [204]

Answer: 1 and 3

It's because they both divide down lower than 1

6 0
3 years ago
Read 2 more answers
2. The robot was initially placed at position (6,9), and at = 2 seconds, its position is (10,15).
qaws [65]
\bf ~~~~~~~~~~~~\textit{distance between 2 points}&#10;\\\\&#10;\begin{array}{ccccccccc}&#10;&&x_1&&y_1&&x_2&&y_2\\&#10;%  (a,b)&#10;&&(~ 6 &,& 9~) &#10;%  (c,d)&#10;&&(~ 10 &,& 15~)&#10;\end{array}~~~ &#10;%  distance value&#10;d = \sqrt{( x_2- x_1)^2 + ( y_2- y_1)^2}&#10;\\\\\\&#10;d=\sqrt{(10-6)^2+(15-9)^2}\implies d=\sqrt{4^2+6^2}\implies d=\sqrt{52}&#10;\\\\\\&#10;d\approx 7.2

what's its speed?  well, it traveled √(52) in 2 seconds, so is simply √(52)/2, which is about 3.6 units per second.
4 0
3 years ago
A soccer ball on the ground is kicked with an initial velocity of 37 feet per second at an elevation angle of 70°. Which
Montano1993 [528]

Answer:

x(t) = 37cos(70o)t and y(t) = –16t2 + 37sin(70o)t

Step-by-step explanation:

6 0
3 years ago
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