15 points!! m ABC + mBAC + m ACB
when ABC is an isosceles triangle with AB=AC
mABC when mBAC = 70°
and ABC is an isosceles triangle with
AB=AC
mZQPR when mZQRP = 30°
and APQR is an isosceles triangle with
PQ = QR
mZBDE when mZBAC = 45°
and points D and E are the midpoints
AB and BC, respectively, in AABC

h df tyjgtyj ttd y ytkgfty ty

step-by-step explanation:

tyty jry j y yj yttj yhgtyj y ghyj ytthj

the answer to the expression is 83

555.99.

step-by-step explanation:

hope this

0.02

step-by-step explanation:

time of 9 192 631 770 periods of the radiation corresponding to the transition between the 2 hyperfine levels of the ground state of the caesium 133 atom at 0 k (but other seconds are sometimes used in astronomy)