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IrinaVladis [17]

3 years ago

6

Simplify the following expression: 35 + (–13) + (+8) – (–6).

2 answers:

Bess [88]3 years ago

8 0

35 + (-13) + 8 - (-6)

35 - 13 + 8 + 6

22 + 8 + 6

30 + 6

36

Sauron [17]3 years ago

6 0

$35 + (-13) + 8 - (-6) \\ \\ 35 - 13 + 8 + 6 \\ \\ 36 \\ \\ Answer: \fbox {36}$

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nika2105 [10]

We can use tangent to calculate the length of ST.

$\sf tangent=\dfrac{opposite}{adjacent}$

Here, the opposite side of the 60 degree angle is ST, and the adjacent is RS. Plug in what we know, we can use 'x' for side ST:

$\sf tan(60\textdegree )=\dfrac{x}{7}$

Solve for 'x', multiply 7 to both sides of the equation:

$\sf x=7tan(60\textdegree )$

This is an exact answer for the length of ST, we can find an approximate with a calculator:

$\sf x\approx 12.12$

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