Which exponent makes the statement true? 1/5^9 = 5^?

Question

Which exponent makes the statement true? 1/5^9 = 5^?
	A.	9
	B.	–9
	C.	one-ninth
	D.	–one-ninth

solve the equation: y5 • y14 =
	A.	2y19
	B.	y60
	C.	y19
	D.	2y60

Using the numbers 3, 2, and 4, which of these problems would have a solution of 4?
	A.	4 • 2^3/2^3 
	B.	2 • 2^3/2^4 
	C.	3 • 2^3/2^4 
	D.	3 • 2^4/2^4

Solve equation: w^12 over w^18 
	A.	w^30
	B.	w^–30
	C.	w^6
	D.	w^–6

mathhelper · Answer

1/5^9 = 5^?
1/5^9 = 5^-9 , by the definition of a^-n

solve the equation: y5 • y14
This is not an equation, but simplified it would be y^19

A. 4 • 2^3/2^3 = 4*1 = 4
B. 2 • 2^3/2^4 = 2*1/2 = 1
C. 3 • 2^3/2^4 = 3* 1/2 = 3/2
D. 3 • 2^4/2^4 = 3*1 = 3

Solve equation: w^12 over w^18
again, this is not an equation, but simplified it would be 1/w^6 or w^-6