Answer:
square kilometers
Step-by-step explanation:
The surface area of a sphere can be found using the formula
. Since the diameter is 3500 km then its radius is half of this. 3500 divided in two is 1,750 units. Substitute r=1,750.

The surface area of the moon is about 38,465,000 square kilometers. Write this is scientific notation using base. 
#7 is the easiest one.
a + bi = -9 + 4i
see the expression on either side matches up so..
a = -9 and b = 4
Answer:
405
Step-by-step explanation:
ex: 5/25=1/5
5 divided by 5 is and 25 divided by 5 is 5.
1.Write down the factors for the numerator(top number) and the denominator(the number down below).
2.Find the largest factor that is common between the two.
3.Divide the numerator and denominator by the greatest common factor.
4.Write down the reduced fraction.
Hope this helps
<span>No because a negative times a negative will be positive and it will not equal a negative number. the square root cannot be one negative and one positive because that is against the definition of a square root.
</span>