Use this survey data for questions 26 and 27.

a survey asked two age groups which summer sport they most preferred. the results are shown in the table below.

age 10-19 age 20-29 total
ski 12 15 27
swim 102 88 190
kayak 35 42 77
hike 23 123 146
total 172 268 440
which sport was most preferred by people ages 20-29, and what is the relative frequency within this age group?

hiking, 28.0%
hiking, 45.9%
swimming, 20.0%
swimming, 32.8%
which option ?

Gh bisects fgi. find the measure of hgi •15° •21° •10° •8°

What is the value of x when x + 7 = 21?

Each person in an it department of 25 people works on at least one of 3 major projects: system security, program implementation, platform development. 10 people work on system security, 13 work on program implementation, and 12 work on platform development. 4 people work on system security and platform development, 5 people work on program implementation and platform development, and 2 people work on all three projects. how many people work on system security and program implementation?