Question

Rembrandt framed his masterpiece. The painting by itself is a rectangle with length 20 \text{ cm}20 cm20, start text, space, c, m, end text and width 16 \text{ cm}16 cm16, start text, space, c, m, end text. The painting and frame together form a larger rectangle with length 25 \text{ cm}25 cm25, start text, space, c, m, end text and width 20 \text{ cm}20 cm20, start text, space, c, m, end text. Find the area of the frame. Assume no overlap between the frame and painting.

Answer 1

Step-by-step explanation:84% of a contractor’s jobs involves electrical work. 75% of a contractor’s jobs involve plumbing work. Of the jobs that involve plumbing, 90% of the jobs also involves electrical work. Let E = jobs involving electrical work L = jobs involving plumbing work Suppose one of the contractor’s jobs is randomly selected. Using the sixth Excel worksheet, a) Find P(E). 0.84 b) Find P(L). 0.75 c) In words, what does E | L mean? d) Find P(E | L). e) Find P(E and L). f) Are E and L independent events? Why or why not? g) Find P(E or L). h) Are E and L mutually exclusive? Why or why not

Answer 2

180 cm squared

Explanation:

First, you find the area of the painting; 20*16=320. Then, you do 25*20=500 which is the "area" or the frame. Lastly, you subract 320 from 500 and you get 180.