Question

Can someone help me with number 7?

Answer 1

Answer:

10

Step-by-step explanation:

Answer 2

Answer:

c)10

Step-by-step explanation:

1) distribute 3 to (5^4)

5^2*5^k=5^12

divide by 5^2 on both sides

5^k=5^12/5^2

5^k=5^10

so k=10

we can recheck:

5^2*5^10=5^12

hope this helps