This model stands for 138.
what number will it stand for if you add a hundreds square and a tens rod?

248

Step-by-step explanation:

a hundreds square = 100

tens rod = 10

138 + 100 + 10

138 + 110

248

248

Step-by-step explanation:

If you had a hundreds square, you will add another hundred.

138+100=238

if you add a tens rod, you Add another ten.

238+10=248

It would stand for 248.

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.