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natta225 [31]
3 years ago
6

Which statements are true according to the order of the operations? A. 16-(4+7)=12+7=19 B. 10+(6÷3)=10+2=12 C. 7×6+4=7×10=70 D.

2+5×7=2+35=37
Mathematics
1 answer:
Viktor [21]3 years ago
6 0
A. \\ 16-(4+7)=12+7=19 - \hbox{wrong, parentheses first:} \\ 16-(4+7)=16-11=5 \\ \\
B. \\
10+(6 \div 3)=10+2=12 - \hbox{correct} \\ \\
C. \\
7 \times 6+4=7 \times 10=70 - \hbox{wrong, multiplication first:} \\
7 \times 6+4=42+4=46 \\ \\
D. \\
2+5 \times 7=2+35=37 - \hbox{correct}


Statements B and D are true.
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Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

Given:

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Here we have a right triangle with hypotenuse Dt and one leg Db.

By definition

cos α = Db / Dt  ⇒ Db = Dt · cos α

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Db = 411 .18 ft

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