Answer:
A-False
B-False
C-False
D-True
The answer to your question is:
Step-by-step explanation:
a. 4.25 x 10⁶ = 4 250 000 False
b. 6.38 x 10⁹ = 63 800 000 False
c. 5.11 x 10⁻² = 0.0511 False
d) 2.79 x 10⁻⁴ = 0.000279 True
