Arailing needs to be build with 470.89 metric ton of iron the factory purchased only 0.38 part of required iron . how much iron is needed to complete the railing?

Which approach to the theory-and-research cycle does the following sequence reflect: (1) specific observations suggest generalizations, (2) generalizations produce a tentative theory, (3) the theory is tested through the formation of hypotheses, and (4) hypotheses may provide suggestions for additional observations?

Determine the number of girls in a math class with 87 boys if there are 25 girls for every 75 boys

This is about circle theorems. someone asap : (