The graph compares the ages of 100 randomly selected visitors at a beach in January and in July.

Mathematics

2 answers:

Nina [5.8K]4 years ago

7 0

Answer:

the answer is 20, just took the test

Step-by-step explanation:

Kipish [7]4 years ago

6 0

The plot for January places the median age at 40, so half of the surveyed group was over 40. That would be half of 100 people, or 50 people.

The plot for July places the upper quartile at age 40, so 1/4 of the surveyed group was over 40. That would be 1/4 of 100 people, or 25 people.

There were 50 - 25 = 25 more visitors over the age of 40 at the beach in January.

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Wayne is hanging a string of lights 78 feet long around the three sides of his piano, which is adjacent to his house. The length

Sauron [17]

Answer:

The width is 18 feet and the length is 42 feet

Step-by-step explanation:

Let x feet be the width of the patio. The length of the patio is 6 feet longer than twice it’s width, then the length of the patio is 2x+6 feet.

Wayne is hanging a string of lights 78 feet long around the three sides of his patio, which is adjacent to his house. The side with length 2x+6 feet is adjacent to the house, so Wayne is hanging a string along three sides with lengths x ft, x ft and 2x+6 ft.

Hence,

$x+x+2x+6=78\\ \\4x=78-6\\ \\4x=72\\ \\x=18\ ft$