Given x2 = 81, select all possible values of x. Ella is playing with a flashlight, observing how light behaves in different situations. Sometimes she sees the light bend, indicating that it is moving at a different speed. What situation would result in this change in speed? -9
-3
0
3
9

mark branliest

step-by-step explanation:

.6 is 1/2 of 12

the answer is actually d. i just took the test

2.56 is the width of the garden

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