Elena completed the 100-meter run in 15.58 seconds. a. How much faster would she have had to run to tie the record?
b. If she could have run 400 meters at the same rate as she ran 100
meters, would she have broken the record? Find the difference
between her time for 400 meters and the record time.
c. The 400-meter run consists of four laps around a 100-meter track.
What was the record holder’s average time per lap?

option a, c,d are correct.

step-by-step explanation:

from the given figure, it is given that z is equidistant from the sides of the triangle rst, then from triangle tzb and triangle szb, we have

tz=sz(given)

bz=zb(common)

therefore, by rhs rule,δtzb ≅δszb

by cpctc, sz≅tz

also, from δctz and δasz,

tz=sz(given)

∠tcz=∠saz(90°)

by rhs rule, δctz ≅ δasz, therefore by cpctc, ∠ctz≅∠asz

also,from δasz and δzsb,

zs=sz(common)

∠zbs=∠saz=90°

by rhs rule, δasz ≅δzsb, therefore, by cpctc, ∠asz≅∠zsb

hence, option a, c,d are correct.

step-by-step explanation:

i have done this all on a piece of paper but idk how to put it on here cuz it needs to be drawn

ummm seems that u didnt post the attachement !