6feet man casts a 2.7 feet shadow at the same time a tree casts a 11.4 feet shadow. how tall is the tree?

Ill mark the brainliest if you me with the these three questions 7,8,9

Find the power set of each of these sets, where a and b are distinct elements. a) {a} b) {a, b} c) {1, 2, 3, 4} show steps

Long division setup showing an incomplete calculation. 12 is in the divisor, 6839 is in the dividend, and 5 hundreds and 6 tens is written in the quotient. 6000 is subtracted from 6839 to give 839. an unknown value represented by a box is being subtracted from 839. what number should be placed in the box to complete the division calculation?