If the pattern below follows the rule "starting with four, every consecutive line has a number one more the the previous line." how many marbles must be in the seventh line?

30005

yes ok                                            

38.6°

step-by-step explanation:

resultant is 10 pound

smaller force = 8 pound

angle formed = tan⁻¹(

                        =tan⁻¹(

                          =tan⁻¹(0.8)

                        =38.6°