The following 20 observations are for two quantitative variables, x and y. Observation
x y
1 -22 22
2 -33 49
3 2 8
4 29 -16
5 -13 10
6 21 -28
7 -13 27
8 -23 35
9 14 -5
10 3 -3
11 -37 48
12 34 -29
13 9 -18
14 -33 31
15 20 -16
16 -3 14
17 -15 18
18 12 17
19 -20 -11
20 -7 -22
(a) Create a scatter chart in Excel for these 20 observations.
(b) Fit a linear trendline to the 20 observations. What can you say about the relationship between these two quantitative variables? Choose the correct answer below.
(i) The trendline confirms that there is a positive linear trend between profits and market capitalization.
(ii) The trendline confirms that there is a negative linear trend between profits and market capitalization.

10010010001010010101001001010010100101010010101010010010101010110010001011010010010001

step-by-step explanation:

the diameter is 16 cm. are you a teacher?

step-by-step explanation:

la parábola es el lugar

geométrico en el cual los puntos tienen una distancia idéntica, equidistantes,

de un punto denominado foco, f, y una recta denominada directriz

el radio vector de una

parábola es el segmento que existe entre un punto cualquiera y el foco.

por la ecuación se observa

que la parábola abre hacia la derecha, por lo cual podemos usar las siguientes fórmulas

la ecuación ordinaria de la

parábola es y^2 = 4px, donde p es la longitud desde el vértice de la parábola al

foco.

la fórmula de la directriz

es x + p = 0

resolviendo:

y^2-9x = 0

y^2 = 9x

4p = 9, entonces p = 9/4

entonces el foco tendrá la

coordenada f(9/4,0)

la directriz vendrá

expresada por

x + p = 0

x = -p

x = -9/4

el problema indica que la

ordenada es igual a 6, entonces

(6)^2=9x

x = 36/9

x = 4

entonces el punto al cual

hay que obtener la distancia será p(4,6)

calculando se tendrá: pf = 

pf = 6,25 u

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step-by-step explanation:

center (1,3) with radius 6

step-by-step explanation:

we must complete the square to find the center and radius of the circle.

first make sure the x and y squared terms have 1 as their coefficients. we also make sure x and y terms together.

we now create space between the x and y terms with parenthesis.

we complete the square by taking the middle terms -2x and the -6y - divide each and square them.

we add the squares to both sides.

simplify.

and write the quadratics in factored form.

the center is (h,k) or (1,3). the radius is the square root of 36 which is 6.