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Andrei [34K]
3 years ago
14

Help please. I dont understand it..so I cant explain it

Mathematics
1 answer:
Ann [662]3 years ago
8 0
A)
x^2 - 6x + c = - 5 + c

using a^2 - 2ab + b^2 = (a-b)^2
so
6x = 2 * x * 3
so
c = 9 

Answer
c = 9

b)
substitute c = 9
x^2 - 6x +  9 = - 5 + 9
(x - 3)^2 = 4

Answer:
(x - 3)^2 = 4

c) solve for x

(x - 3)^2 = 4
(x - 3)^2 = 2^2
so
x - 3 = 2  
     x = 5

and

x - 3 = -2
     x = 1

Answer: x = 1 , 3


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W=5, X=3, Y=4, Z=8<br><br> 9X=
vova2212 [387]

Answer:

27

Step-by-step explanation:

9(3)=27

For my answer I got 27 because brackets means multiply in maths so I multiply 9 by 3 and I got 27

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Points A,B,C,D, and E are collinear and in that order. Find AC if AE = x 50 and CE = x 32.
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ivann1987 [24]

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Step-by-step explanation:

7 0
2 years ago
Geometry ! No links please
DENIUS [597]

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6 0
3 years ago
Determine the type of correlation that exists in the given data set. Age (years) 23 45 39 74 63 52 59 28 35 11 26 49 IQ 76 82 11
Lyrx [107]

Answer:

B -0.104

Step-by-step explanation:

Step 1: Write the formula for correlation

r =    total xy

√Total x² x Total y²

Step 2: Make a table to calculate all values

Table is attached in the picture below

Step 3 : Solve

Mean of X = Total X/ Total number of X

                  = 507/12

                  = 106.33

Mean of Y = Total Y/ Total number of Y

                  = 1276/ 12  

                  = 42.25

r =    total xy

√Total x² x Total y²

r = -352.05/ √3656.25 x 3122.66698

r = -0.104

-0.104 is negative

This negative correlation means there is an inverse correlation between variables.

6 0
3 years ago
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