1) rewrite using standard notation : 291.2 x 10^-2 . 2) rewrite using standard notation: 54.1 x 10^-3 . 3) in this expression 4.22 x 10^-3 , which number is the exponent ?

answer:

step-by-step explanation:

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