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2 years ago

What is the value of the expression? –13.7+(–5+2.7)

Mathematics

2 answers:

Leno4ka [110]2 years ago

8 0

$-13.7+(-5+2.7)=-13.7+(2.7+(-5))\\\\=-13.7+(2.7-5)=-13.7+(-2.3)=-(13.7+2.3)\\\\=\boxed{-16}\leftarrow\boxed{b.}$

Olegator [25]2 years ago

5 0

-13.7 + (-5 + 2.7)

First, simplify -5 + 2.7 to -2.3 / Your problem should look like: $-13.7 + -2.3$
Second, simplify to get rid of the addition. / Your problem should look like: $-13.7 - 2.3$
Third, subtract. / Your problem should look like: $-16$

Answer: -16 (B)

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2 years ago

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However when we have one angle given with the 90 degree we can deduct without trigonometry but we would use all angles to find the hypotenuse or all angles to find the side of a right angle.

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-------------------------------\\\\
\textit{now to convert it to miles/hr}
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