Answer:
SteEarth's surface covered by water is 352,000,000 + 9 x 10^6 = 352,000,000 + 9,000,000 = 361,000,000 = 3.61 x 10^8p-by-step explanation:
Answer:

Step-by-step explanation:
→ First calculate 6⁻³
216
→ Remember that negative indices results in the reciprocal

Answer:
59.5
Step-by-step explanation:
area of the triangle is (7 x 3)/2=21/2=10.5
area of the square 7x7=49
Answer:
18:30
or a more simplified version is
3:5