He history museum is hosting a special exhibition on history of flight. The admission ticket for each adult costs $3 and the admission ticket for each child costs $2. On the opening day of the exhibition, 60 tickets were sold for a total of $160. How manyadults visited the special exhibition?

20

Step-by-step explanation:

Given that :

Adult admission :

Adult (a) = $3

Children (b) =$2

60 tickets were sold :

a + b = 60 - - - (1)

Cost of tickets sold :

3a + 2b = 160 - - - (2)

From (1):

a = 60 - b

3(60 - b) + 2b = 160

180 - 3b + 2b = 160

180 - b = 160

180 - 160 = b

20 = b

Number of adults :

a = 60 - b

a = 60 - 20

a = 20

Hence, 20 adults visited the exhibition

so the possibilities of the measurement of the side of the triangle are either it is longest side or not the longest side

when it is the longest side

s < 25 + 35s < 60

if it is not the longest side

35 < 25 + s10 < sso 10 < s < 60so the perimeter70 < p < 130

its line 2 i just added the rest or else it wouldn't let me answer