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nadya68 [22]
3 years ago
15

What's the average of x-y and x+y

Mathematics
1 answer:
frez [133]3 years ago
6 0

Answer:

x

Step-by-step explanation:

(x−y + x+y) / 2

2x / 2

x

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Which sequences are arithmetic? Check all that apply.
spin [16.1K]

Answer:

3)    18, 5.5, –7, –19.5, –32, …   sequence is in Arithmetic Progression.

5)     16, 32, 48, 64, 80         sequence is in Arithmetic Progression.

Step-by-step explanation:

If, a, b, c ,k, e ... is a given sequence.

Then the above sequence is in AP if b - a   =  c - b = k - c = ...

or, each term has same COMMON DIFFERENCE (d).

Here, take each sequence and check for the value of d.

1) –5, 5, –5, 5, –5, …

Here, 5 - (-5)  = 10,   -5 - 5  = -10

and 10 ≠ -10.  So the sequence is NOT in Arithmetic Progression.

2)96, 48, 24, 12, 6

Here, 48 - 96  = -48,   24 - 48  = -24

and -48 ≠ -24.  So the sequence is NOT in Arithmetic Progression.

3)18, 5.5, –7, –19.5, –32, …

Here, 5.5 - 18 = -12.5    ,  -7 - 5.5 = -12.5  ..

and -12.5 is the common difference.  

So the sequence is in Arithmetic Progression.

4)–1, –3, –9, –27, –81, …

Here, -3-(-1)  =  - 2     -9 - (-3)  = -6

and -2 ≠ -6.  So the sequence is NOT in Arithmetic Progression.

5)16, 32, 48, 64, 80

Here, 32 - 16 = 16    ,  48  - 32= 16  ..

and 16 is the common difference.  

So the sequence is in Arithmetic Progression.

6 0
3 years ago
Read 2 more answers
Find the volume of the prism. Round to the nearest tenth if necessary.
spayn [35]

Answer:

27.2

Step-by-step explanation:

V = (1/2)(2.6)(5.1)(4.1), which is 27.2 to the nearest tenth

8 0
2 years ago
What is 60,000 + 3,000 + 20 + 9 in standard form
Zigmanuir [339]
60,000+3,000+20+9 in standard form is 6.3029 x 10^4.


Hope this helps you! 
-Hamilton1757
8 0
3 years ago
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Figure S is reflected over the y-axis and then rotated 90° clockwise. Which side of Figure T is
Ronch [10]

Answer:

hi

Step-by-step explanation:

none

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3 years ago
Write the equation of the line fully simplified slope-intercept form
zhenek [66]

Answer:

yea no. i hate math like this , plus ill give you a wrong answer

Step-by-step explanation:

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