5/2 (7x-15)+x> 13/2-3/2

5(7x - 15) + 2x ≥ 13x - 3    multiplied both sides by 2 to clear the denominator

35x - 75 + 2x ≥ 13 x - 3     distributed 5 into 7x-15

37x - 75  ≥ 13x - 3             added like terms (35x and 2x)

24x - 75 ≥ -3                     subtracted 13x from both sides

24x ≥ 72                           added 75 to both sides

x ≥ 3                                  divided both sides by 24

x ≥ 3        Notation: [3, ∞)

answer: the angel abc is 30°,and the abc is a triangle where the angel bac is 90°

so ac is the half of 24=12ft,and from the pythagorean theorem we find ba

ba=√bc^2-ac^2=√576-144=√432=12√3ft

so bac is 12+12√3=12(1+√3)ft

1st part is 64,000,000

2nd part 500,000

step-by-step explanation: