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just olya [345]
3 years ago
5

What is 9 time 9? Please help.

Mathematics
2 answers:
Mandarinka [93]3 years ago
7 0
9 times 9 gives you 81

bazaltina [42]3 years ago
5 0
The answer is 81 because multiplication is just adding numbers. Just add 9+9 nine times.
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Answer: Length of shorter tree = 7.2 feet .

Step-by-step explanation:

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Both trees are vertical to the ground making right angle so triangles made by both triangles must be similar.

Corresponding sides of similar triangles are proportional.

So \dfrac{\text{length of the shadow of the shorter tree}}{\text{height of shorter tree}}=\dfrac{\text{length of the shadow of the bigger tree}}{\text{height of bigger tree}}\\\\=\dfrac{\text{length of the shadow of the shorter tree}}{20}=\dfrac{18}{50}\\\\\Rightarrow\ \text{length of the shadow of the shorter tree}=\dfrac{18}{50}\times20\\\\\Rightarrow\ \text{length of the shadow of the shorter tree} = 7.2

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Hey there!

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