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2 years ago

Which of the sums below can be expressed as 8(2 + 7)?

Mathematics

2 answers:

S_A_V [24]2 years ago

6 0

The answer to 8(2 + 7) would be 72 so 16 + 56 = 72 as well which means the answer is D) 16 + 56.

kotegsom [21]2 years ago

5 0

Hello there!

The answer should be the last option D.

Explanation:

↓↓↓↓↓↓↓↓↓↓↓↓↓

First you had to calculate with parenthesis

(2+7)=9

8*9

Then multiply and divide from left to right

8*9=72

$8*2=16$

$8*7=56$

Answer⇒⇒⇒16+56

Hope this helps!

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Have a great day!

-Charlie

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3 years ago

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Answer:

$23\sqrt{3}\ un^2$

Step-by-step explanation:

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2. Note that

$A_{\triangle IJK}=A_{\triangle IAK}=\dfrac{3\sqrt{3}}{2}\ un^2 \\ \\ \\A_{\triangle KLM}=A_{\triangle KAM}=4\sqrt{3}\ un^2 \\ \\ \\A_{\triangle MNI}=A_{\triangle MAI}=6\sqrt{3}\ un^2$

3. The area of hexagon IJKLMN is the sum of the area of all triangles:

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Another way to solve is to find the area of triangle KIM be Heorn's fomula, where all sides KI, KM and IM can be calculated using cosine theorem.

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Third, once you figure that out then plug stuff in...

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