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3 years ago

Solve. 12-(2x3) A. 6 B. 12 C. 12(2) D. 2 3

Mathematics

2 answers:

Sergio [31]3 years ago

7 0

The answer would be A) 6.

Allushta [10]3 years ago

4 0

A. 6 Because you multiply 2 x 3 since it's in parenthesis, which is 6 then you subtract 12 -6 which equals 6.

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Andrew wants to measure the height of a traffic light. He walks exactly 20 feet from the base of the traffic light and looks up.

slava [35]

Answer-

The height of the traffic light is 21.8 feet.

Solution-

As shown in figure, we can see the right triangle formed from the situation,

From the question,

BC = the distance walked by Andrew from the traffic light = 20 feet

Height of Andrew's eye = 5 feet

Height of the traffic light = AB + Height of Andrew's eye

From the properties of triangle,

$\Rightarrow \tan \theta =\frac{Height}{Base}$

$\Rightarrow \tan C =\frac{AB}{BC}$

$\Rightarrow AB=\tan C\times BC$

$\Rightarrow AB=\tan 40\times 20$

$\Rightarrow AB=16.8$

Therefore, height of the traffic light = AB + Height of Andrew's eye = 16.8+5 = 21.8 feet

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4 years ago

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navik [9.2K]

Answer:

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4 years ago

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Lera25 [3.4K]

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3 years ago

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Trong những phát biểu sau, có bao nhiêu phát biểu là mệnh đề?

Tamiku [17]

Answer:

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Step-by-step explanation:

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3 years ago

circumference of a circular field is 197.82 yards. What is the diameter of the field? Use 3.14 for it and do not round your answ

storchak [24]

Answer:

63 yards.

Step-by-step explanation:

The circumference of a circle is its diameter multiplied by the constant pi. $C=\pi d$ . We are told to use $\pi=3.14$ and $C=197.82$ , so we rearrange: $\frac{197.82}{3.14}=d$

We find that $d=63$ .

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3 years ago