Will give brainiest. Solve for X x^9 = 12^2 * 12^7

x=12

Step-by-step explanation: Since you are multiplying the bases and they are both 12 you can simply add the exponents together and keep the base the same (This is the law of exponents).

x^9=12^2*12^7 add exponents

x^9=12^9

Since X and 12 have the same exponents, the exponents cancel each other out making x=12

first one

remember

a/b=c/d also can be written as

ad=bc

so

first one can be rewritten as

3x=96

divide both sides by 3

x=32

2nd ones we can just times both sides by 5 to get

x=50/12

3rd one we times 12 both sides to get

x=8

4th one we translate to

4x=63

divide by 4

x=63/4

5th one we translate to

99=5x

divide by 5

99/5=x

6th one we times 21 both sides

6=x

7th one we times both sides by 16

14=x

last one we translate to

45=3x

divide 3

15=x

Step-by-step explanation:

none of the option is correct.

step-by-step explanation:

it says to find which expression equals 9^3 sqrt 10 = ?

9^3 sqrt 10 = 729 sqrt 10.

checking option a. 5 sqrt 10 + 4 sqrt 10

5 sqrt 10 + 4 sqrt 10

= 9 sqrt 10.

checking option b. 5^3 sqrt 10 + 4^3 sqrt 10

5^3 sqrt 10 + 4^3 sqrt 10

= 125 sqrt 10 + 64 sqrt 10

= 189 sqrt 10.

checking option c. 5 sqrt 10 + 4^3 sqrt 10

5 sqrt 10 + 4^3 sqrt 10

= 5 sqrt 10 + 64 sqrt 10

= 69 sqrt 10.

checking option d. 5^3 sqrt 10 + 4 sqrt 10

5^3 sqrt 10 + 4 sqrt 10

= 125 sqrt 10 + 4 sqrt 10

= 129 sqrt 10.

hence, none of the option is correct.

i need the options

step-by-step explanation: