Answer:
I think it's the second one
16/20=0.8
Step-by-step explanation:
hope this helps
B has a negative exponent: 8 x 10^-7
A doesn't: 4.267 x 10^7
-4.75= z/2
Multiply both sides by 2
-4.75(2)= z/2(2)
Cross out 2 and 2, divide by 1 and becomes z
z=-9.5
Answer: z= -9.5
