In 2010 the continent of South America had a population of 395,280,204. Which of the following is the closest estimate of this number Round to the nearest power of 10
3 x10^8
4×10^7
4x10^8
4x10^9

4 x 10⁸

Step-by-step explanation:

Well 4 x 10⁸ is 400, 000, 000 which is the closest to 395, 280, 204. For future reference, the number of powers the 10 is raised to is the number of zeros it will have.

if you explain the the question more correctly i might be able to answer this better

step-by-step explanation:

d) by the cross product property, ab^2 = bc multiplied by ad

step-by-step explanation:

we are given

in the given triangle abc

angle a is 90° and segment ad is perpendicular to segment bc

we can see that

triangle(abc) and triangle(abd) are similar because they have common side and same angle (90 degree)

so, triangles(abc) and abd are similar

since, they are similar

so, the ratio of their sides must be equal

we get

now, we can cross multiply

and we get

so, this could be step to prove it