Convert the verbal expression with its equivalent alegbraic expression. Use x for any unknowns. Five more than nine times square of a number. The mathematical equivalent of this phrase is?

Step-by-step explanation:

Let x represent the unknown number.

We are asked to convert the verbal expression with its equivalent algebraic expression..

Five more than a nine times square of a number.

Square of the number would be .

Nine times square of the number would be 9 multiplied by   as:

.

Five more than a nine times square of a number would be plus 5 as:

Therefore, our required expression would be .

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

answer: do we write it

step-by-step explanation: