13. a set s s r is said to be bounded from below if, and only if, there exists a real number c such that c s s for each s e s. for instance, each of the sets [0, ), (0, o), and q' are bounded from below because in each case every element of the set is greater than (or equal to) 0 determine whether the given set is bounded from below. expln a) z b) n d) (x2x+1> 0) f (+5> 0)

im alright what do you need

step-by-step explanation:

the answer is 0.000652422

but if you ment to ask what is 6131 divided by 4, it is 1532.75.

step-by-step explanation:

i'm sorry mate, but i am not seeing any figures. i am unable to solve this for you.

< xcy ≅ < xby

step-by-step explanation:

in δcax and δbax,

so, δcax ≅ δbax (side-angle-side or sas)

since δcax ≅ δbax, we can conclude < acx ≅ < abx

in δacy and δaby,

so, δacy ≅ δaby (side-angle-side or sas)

since δacy ≅ δaby, we can conclude < acy ≅ < aby

now,

< acy ≅ < aby

=> < acx + < xcy ≅ < abx + < xby

=> < acx + < xcy ≅ < acx + < xby   (since < acx ≅ < abx already proved above)

subtracting < acx from both sides, we get

< acx + < xcy -< acx ≅ < acx + < xby -< acx

cancelling out < acx and -< acx from both sides, we get

< xcy ≅ < xby (proved)