HELP PLEASE Write an algebraic expression to model the unknown number situation. the sum of a number and one-third A 1-column table with 5 rows. Column 1 is labeled Addition Words with entries add, increase by, more than, sum, total. Which statements are true? Select all that apply. You can replace "a number" with a variable to represent an unknown value. You can replace "sum" with an addition sign. You can replace "sum" with an multiplication sign. You can replace "one-third" with One-third. The correct algebraic expression is One-third n.

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

0.0076, if you meant 4.125 divided by 0.03125 it would be 132

step-by-step explanation:

first you have to move the decimal in 0.03125 over until its behind the 5 which is 5 places over. now the number is 3125

then you have to move the decimal in 4.125, 5 places over. now the number is 4,112,500.

now you divide like you would normally would and get 0.0076

-4, -2, 1, 4

step-by-step explanation:

domain = x values

range = y values