In triangle rst, rt = 4, st = 8, and tx bisects < rts.
which of the following proportions must be true?
rx/st = trixs
tx/xr = st/rt
rx/rt = sx/st
rx/rs = xs/st

Step-by-step explanation:

In triangle RST, TX bisects angle RTS.

Angle bisector theorem says that an angle bisector of a triangle will divide the opposite side into two segments that are proportional to the other two sides of the triangle.

Hence, TX divides side RS in the ratio:

Therefore, option B is true.

question:

could we have options?

the answer is: d) o, f, and kr.

atomic radius of bromine (br) is 114 pm.

atomic radius of oxygen (o) is 73 pm.

atomic radius of fluorine (f) is 72 pm.

atomic radius of krypron (kr) is 112 pm.

the atomic radius of a chemical element is a measure of the size of its atom.

the atomic radius varies with increasing atomic number, but usually increases because of increasing of number of electrons.

the atomic radius decreases across the periods because an increasing number of protons, because greater attraction between the protons and electrons.