ellaemtagedeane
22.03.2021 •
Mathematics
Which expressions are equivalent to 2(4x+2y)
A: 4(2x+y)
B: 8x+4y
C: 2x(4+2y)
D: 8x+2y
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Ответ:
A,B
Step-by-step explanation:
4(2x+y)
4•2x + 4•y
8x+4y
2(4x+2y)
2•4x + 2•2y
8x+4y
Ответ:
9514 1404 393
0.02
Step-by-step explanation:
We assume your angle is in degrees:
3cot(30°)/230 = 3√3/230 ≈ 0.02259
≈ 0.02 . . . . . rounded to 2 decimal places
__
This is a straightforward calculator problem. You may have to use one or another of the identities ...
cot(30°) = 1/tan(30°) = tan(90° -30°) = tan(60°)