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klasskru [66]
3 years ago
12

Explain how you could use a number line to show that -4 + 3 and 3 + (-4) have the same value

Mathematics
1 answer:
dedylja [7]3 years ago
6 0

 -4        -3           -2             -1           0              1            2              3
I______I_______I_______I_______I_______I_______I_______I
 
* start here, and ADD NEGATIVE 3... you go to 1
                         
                                                                                                      * start here, SUBTRACT 4    you go to -1

in other words adding a negative is the same as subtracting a postitve


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A set of raw paired sample data is given below. Convert this raw data into paired ranks, and calculate the value of the rs test
SOVA2 [1]

here is the data set for the complete question

x: 18 21 19 21 20 21

y; 2 14 5 6 18 18

Answer:

B. 0.652

Step-by-step explanation:

x   y   rank of x     rank of y   d         d²

18   2     1                1               0          0

21   14    4                4             0          0

19    5     2               2             0          0

21    6     4               3            1            1

20    18    3             5.5         -2.5      6.25

21     18    4             5.5          -1.5       2.25

∑d² = 8.5

rs = 1 - 6[∑di² + ∑m(m²-1)]/n(n²-1)

= 1 - 6[8.5 +{3(3²-10/12 + 2(2² - 1)/12}]/6(6²-1)

= 1 - 0.348

= 0.652

therefore option b is the right answer.

5 0
3 years ago
X^(2)-2x+7 I need to find Find the vertex and the axis of symmetry.
AleksandrR [38]

Answer:

Vertex: (1, 6)

Axis of symmetry: x = 1

Step-by-step explanation:

8 0
2 years ago
What is the vertex of the quadratic function f(x) = (x - 8)(x - 2)
Anna11 [10]
Good day ~_~ /////////////

7 0
3 years ago
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The height h is greater than 2.5 meters.<br> Write an inequality for the word sentence
Zielflug [23.3K]

Answer:

H > 2.5

Step-by-step explanation:

Greater = >

Lessthan = <

Equal = =

4 0
3 years ago
How do i write y = x -4 in a x and y chart/table?
IrinaK [193]
Okay well it kept saying that I for some reason was not using appropriate words so my long response got deleted.

tldr; we can treat this like a box that we put something into (x) and we get something back from it (y).

We can then take this data we get and put it in a table.  This is useful for finding patterns.

I will post a picture of what a table may look like.

Hope this Helps!

6 0
3 years ago
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