Answer:
Step-by-step explanation:
(2+3root7)(5−2root7)
=(2+3root7)(5+−2o2rt7)
=(2)(5)+(2)(−2o2rt7)+(3root7)(5)+(3root7)(−2o2rt7)
=10−4o2rt7+15o2rt7−6o4r2t14
=−6o4r2t14+11o2rt7+10
Answer:
t
Step-by-step explanation:
yhhhhh6bbbb h 66yltktktktoitt
We know that
in the triangle ACB
∠ACB+90+34=180-----> ∠ACB=180-(90+34)----> ∠ACB=56°
∠ACD and ∠ACB-----> are supplementary angles
so
∠ACD+∠ACB=180-----> ∠ACD=180-56----> 124°------> x=124°
the answer Part 1) is x=124°
Part 2)
∠ACB+∠BCF+80=180-----> ∠BCF=180-(∠ACB+80)---> 180-(56+80)
∠BCF=180-136----> 44°-----> y=44°
the answer Part 2) is y=44°
Answer:
x=80
Step-by-step explanation:
39₂+b₂=89₂
1521+b₂=7921
7921-1521=6400
=80
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