A triangular pane of glass has a height of 44 inches and an area of 484 square inches. What is the length of the base of the pane?

22 inches

Step-by-step explanation:

Height = 44 inches

Area = 1/2base * height = 484 square inches

base = 2 *area / height

base = 2 *484 / 44

base = 22 inches

ddd

step-by-step explanation:

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional