Let H(x) be the percent of U. S. households with Internet use x years after 1980. Match each statement with its meaning. 1. H(23)=55
2. H(4)=k
3. H(27)≥61
4. H(17)+H(21)≈H(29)

Options-
(in the picture)

H(23)=55 - 55% of U.S households had internet use in 2003.

H(4)=k - k% of U.S households had internet use in 1984.

H(27)≥61 - At least 61 percent of U.S households had internet use in 2007.

H(17)+H(21)≈H(29) - The sum of the percents of U.S. households with internet use in 1997 and 2001 is about the same as the percent of U.S. households with internet use in 2009.

Step-by-step explanation:

I have no idea how to explain, oh well.

given : the shape of his satellite can be modeled by   where x and y are modeled in inches.

now,the given equation   is a equation of parabola.

here, coefficient of x is positive, hence the parabola opens rightwards.

on comparing this equation with standard equation , we get

in standard equation, coordinates of focus=(0,m)

thus for given equation coordinates of focus=(0,1.5)

step-by-step explanation:

cluster sampling.

step-by-step explanation: