Answer:

11.) true

12.) true

13.) false

14.)true

15.) false

Step-by-step explanation:

Answer:

11. True, 1/g^-9 = 1/1/g^9 = g^9  {a^-b = 1/a^b}

12. False, it is read as Y over the square root of 3y . Not the cube root, {expression}

13. True, Any number multiply by zero the answer is 0

14. True, since 5 is being multiplied to a number h and it is increased by 9. Which is 5h + 9. So the Algebraic Phrase is correct.

15. False, 8x/12xy = 2/3y