An experiment is conducted on the effects of trampling on vegetation in alpine meadows. a 70-kilogram hiker wearing heavy boots will be used. twenty sections of vegetation, each 0.5 by 4.5 meters, are divided up into 5 groups. the hiker will walk on each section 0, 25, 75, 200, or 500 times. after 1 year, the height of the vegetation in each section is measured. is there a control group?

a. yes, because the same hiker is used throughout the experiment.
b. no, because all sections have vegetation to start.
c. yes, because some sections get 0 walking passes.
d. yes, because sections are all the same size.

  q

step-by-step explanation:

each line from a vertex to the midpoint of the opposite side is called a median. the point where the medians intersect, point q, is the centroid.

the centroid of δabc is point q.

constants mean the stopped points or the points on a graph that nothing is changing, hope this

step-by-step explanation:

. + λrh() e 1 1 2 4 4 4 4 4 3 4 4 4 4 4 + th−1(− s(x)2 dx ω + λrh−1() e 2 1 2 4 4

step-by-step explanation:

the correct answer option is (2x-3)(2x+3).

step-by-step explanation:

we are given the following expression and we are to factorize it:

we are to find such factors that when multiplied they give a result of 36 (9 x 4 = 36) and when added they give a result of 0.

the two such factors of 36 are negative six and postive six.

factorizing the given expression to get:

therefore, the correct factorization of is (2x-3)(2x+3).