3 years ago

What is the value of b in the equation below? 9^-8 x 9^-2 = a^b -10 -6 9 16

2 answers:

5 0

Your answer is the first option, -10

Laws of Indices states that a^b x a^c = a^(b + c), therefore 9^-8 x 9^-2 = 9^(-8 - 2) = 9^-10

lys-0071 [83]3 years ago

3 0

Answer:

-10

Step-by-step explanation:

9^-8 x 9^-2 = a^b

We know that x^y * x^z = x^(y+z)

9^-8 x 9^-2 = 9^(-8+-2) = 9^(-10)

a= 9

b = -10

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