Answer:
D. 15x10^20
Step-by-step explanation:
The rule for scientific notation is that the coefficient has to be between 1 and less than 10. This means there is only one digit in front of the decimal. 15x10^20 should be written as 1.5x10^21 to follow the rule.
Simplify the radical by breaking the radicand up into a product of known factors.<span>x<span>4 is your answer!</span></span>
Answer: x=8 x=0
Step-by-step explanation:
It would be D. because the volume of a sphere is 4/2 x pi x radius^3.
#8: $900. (I found this answer by multiplying 3000 and 0.3 by the way)
#9: 160 miles. I found this answer by multiplying 80 by two, since two halves/50% make a whole or 100%.
