Woodsydal2390
03.06.2020 •
Mathematics
Which is NOT a correct statement about variables?
A.Variables are letters or symbols.
B.Variables can represent unknown quantities.
C.Variables can appear in numerical expressions.
D.Variables can represent quantities that change depending on the situation.
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Ответ:
A
Step-by-step explanation:
there is no symbols, it's just letters
Ответ:
x=57
Step-by-step explanation:
a triangle has a sum of 180 degrees
that angle 51 is vertical to the angle across it so it is 51
we do math now
180-72-51=57
I hope this helped :))