Mathematics
17.09.2020 01:08
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To estimate the height of the jin mao tower in shanghai , a tourist sights the top

To estimate the height of the jin mao tower in shanghai , a tourist sights the top of the tower form a mirror that is 87.6 meters from the tower.the mirror is on the ground and faces up . the tourist is 0.4 meters from the mirror, and the distance from his eyes to the ground is 1.92 meters
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ElizabethF
ElizabethF
4,5(37 marks)

Set up a ratio of the height and distances:

Let X equal the height of the tower.

1.92 / 0.4 = X / 87.6

Cross multiply:

(1.92 * 87.6) = 0.4x

Simplify:

168.192 = 0.4x

Divide both sides by 0.4:

x = 168.192 / 0.4

x = 420.48 meters tall.

Round answer as needed.

jynaepooh
jynaepooh
4,5(97 marks)
PEMDAS use this
ok first you do 7x7 to equal 49 then add 50 to equal 99. then do 5x5x5 to equal 125. the parentheses are gone and the 5x5x5 is gone now the problem is 125-2x3-99. to finish you multiply 2x3 to equal 6 now 125-6-99=20
answer-20

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