How many significant digits are in 4.0×10^4

In the diagram below, tan θ = sqrt 3. what is the value of m?

Need an artist designed a badge for a school club. figure abcd on the coordinate grid below shows the shape of the badge: the badge is enlarged and plotted on the coordinate grid as figure jklm with point j located at (2, -2) and point m is located at (5, 4). which of these could be the coordinates for point l? a. (2, 4) b. (8, 4) c. (5, 1) d. (5, 7)

Which fraction is equal to 1hole and 2/5? a.3/5 b.75 c.57 d.73