Quadrilateral abcd
a
b
c
d
is similiar to quadrilateral efgh
e
f
g
h
. the lengths of the three longest sides in quadrilateral abcd
a
b
c
d
are 60 feet, 40 feet, and 30 feet long. if the two shortest sides of quadrilateral efgh
e
f
g
h
are 6 feet long and 12 feet long, how long is the 4th side on quadrilateral abcd
a
b
c
d
?

4.6875 pounds

step-by-step explanation:

7 ft 6 in means 7 1/2, because 6 in is 1/2 of a foot. 7 ft 8 in means 7 2/3 because 8 in is 2/3 of a foot. 23/3 = 7 2/3. 15/2 = 7 1/2.

23/3   *   15/2   = 57 1/2

step-by-step explanation:

see explanation

step-by-step explanation:

a

(6r + 7) + (13 + 7r) ( remove brackets and collect like terms )

= 6r + 7 + 13 + 7r

= 13r + 20

b

remove brackets and collect like terms

13 - r - 1 + r

= 12 - r

c

remove brackets and collect like terms

= - 8 - r + 2r - 4

= - 12 + r

d

remove brackets and collect like terms

= 7r - - - 6r

[-   - = - - = - ]

= r -