How do I solve this?

3

Step-by-step explanation:

2•3=6 +2=8 8 squared is 8•8 which is 64. This problem is quite simple.

X=3

Step-by-step explanation:

Step 1: Find the square root of 64

since there is an exponent of 2 around your paranthesis, you must get rid of that first, by finding the square root of the first part of the equation and 64. then you will have (2x+2)=8

Step 2: Subtract 2

next subtract 2 from both sides of the equation, and you will have 2x=6

Step 3: divide by 2

lastly, divide each side by 2. you will get x=3

180 square centimeters

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