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Natasha2012 [34]
3 years ago
7

How i can do this step by step If y= (x+3)^2, then (-2x-6)^2

Mathematics
1 answer:
zhenek [66]3 years ago
3 0
(-2x-6)^2=(-2(x+3))^2=(-2)^2\cdot(x+3)^2=4(x+3)^2=4y
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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
Please help me on number 5! asap please!
kirill115 [55]
The answer is 13 you subtract 25 and 12
3 0
3 years ago
Objects A and B are in harmonic motion modeled by
Zepler [3.9K]

Answer:

The phase difference between yA and yB is  \frac{-\pi }{12}

Step-by-step explanation:

Given harmonic modeled as :

yA = 8 sin(2t  - \frac{\pi }{3})         And

yB = 8 sin(2t  - \frac{\pi }{4})

The function as written as :

y = a sin(ωt  - Ф)  where  Ф is phase difference

So , phase difference between yA   and  yB = ( Ф_1 - Ф_2 )

Or phase difference between yA   and  yB = ( -  \frac{\pi }{3} + \frac{\pi }{4} )

Or, phase difference between yA   and  yB = (\frac{-4\pi +3\pi }{12})

I.e phase difference between yA   and  yB =\frac{-\pi }{12}

Hence The phase difference between yA and yB is \frac{-\pi }{12}   Answer

4 0
3 years ago
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Find the missing side. Round to the nearest tenth, if necessary. *
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Use Pythagorean theorem (a^2=c^2-b^2)
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Formula of quadratic function and their graph​
Mama L [17]

Answer:

-b +/- √b^2-4ac

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2a

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2 years ago
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