Cable del poste telefónico. Como se muestra en la figura, un poste telefonico forma un ángulo recto de 90° respecto del piso. Determina la longitud del cable que conecta al poste a 40 pies del piso, y que está anclado al piso a 20 pies desde la base del poste, 40 pies 20 pies

44.7 pies

Step-by-step explanation:

40^2 + 20^2 = X^2

1600 + 400 = X^2

Sqrt 2000 = X

X = 44.7 pies

answer: answer

step-by-step explanation:

step-by-step explanation:

always plug in x. in this case, x equals 4.

i'm going to first solve 4(2+3x)

1) 4(2+3(4)) use pemdas to solve.

i'm going to multiply whats in the parenthesis first, so 3 times 4=12.

2)4 (2+12) i'm then going to multiply 4 by both numbers in the parenthesis (because multiplying comes before adding)

4 times 2= 8.   4 times 12= 48

4) (8+48)= 56 (answer)

i'm then going to solve 8+12x and plug in 4 for x.

1) 8 +12(4)

multiplying comes before adding, so i'm gonna multiply 12 and 4.

12 times 4= 48.

2) 8+48=56

both equal the same!