Question

please answer the questions​

Answer 1

Answer:

answer 1:

a)9.5*10^11= 950000000000

answer 2:

a)256.9*10^-9

b)1.285*10^10

answer 3:

a)9/8 ^-5× 9/8^-3= 9/8^-5+-3

9/8^-3-5= 9/8^-8

answer 4:

(-4/11)^-5*(33/20)^-5= (-4/11×33/20)^-5

=(-3/5)^-5