Astudy by the national park service revealed that 50% of the vacationers going to the rocky mountain region visit yellowstone park, 40% visit the grand tetons, and 35% visit both. what is the probability that a vacationer will visit at least one of these magnificent attractions?

55%

Step-by-step explanation:

To find the probability that a vacationer will visit at least one of the attractions, it is used the following formula, considering the events are not mutually exclusive (this means that one could happen independent to the other)

P(A or B) = p(A) + p(B) – p(A and B).

Let

A = vacationer who visit Yellowstone Park

B = vacationer who visit Grand Tetons

P (A or B) = 0.5+ 0.4 - 0.35

P (A or B) = 0.55

There is 55% that a vacationes will visit at least an attraction.

∠lno ≅ ∠lnm

∠oln ≅ ∠mln

step-by-step explanation:

given   that triangle lno is congruent to triangle lnm.

we have to fill up the blanks in the given question.

according to above order of congruency   kept in mind we can say that

∠lno ≅ ∠lnm

∠oln ≅ ∠mln

ln ≅ ln due to common in both.

hence, by sas congruency,

the side angle side rule   states that if two sides and the included angle of one triangle are congruent to another triangle, then these two triangles are congruent.