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vaieri [72.5K]
3 years ago
15

Tanya wants to find the height of the tree. She walks away from the base of the tree so the tip of her shadow coincides with the

tip of the tree's shadow at point C. BE is two and a half times EC. Tanya is 5 feet, 3 inches tall. How tall is the tree in feet?
Mathematics
1 answer:
Vikki [24]3 years ago
3 0
<span><u>Answer </u>
18 feet and 4.5 inches

<u>Explanation </u>
You are going to use the concept of similar triangle.
∆CED≡∆CBA
This is because they share the angle at C and also they both have an angle of 90o.
Let EC = X, then BE = 2.5X. So, BE = (X + 2.5X) = 3.5X
The scale factor EC/BC=x/3.5x=2/7
EC/BC=ED/BA=2/7
BA=7/2×63 in
The height of the tree = 220.5 inches. This is equal 18 feet and 4.5 inches.  
</span>
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Jay took a number, n, and increased it by 25%. Then, he doubled the resulting product. Which of the following is equivalent to t
ruslelena [56]

Answer: Multiplying the number by 2.5

Step-by-step explanation:

Jay took a number, n, and increased it by 25%. The value gotten will be:

= n + (25% × n)

= n + (0.25 × n)

= n + 0.25n

= 1.25n

After that, Then, he doubled the resulting product. The value now gotten will be:

= 2 × 1.25n

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Therefore, the equivalent will be multiplying the number by 2.5. This will be:

= n × 2.5

= 2.5n

Therefore, it's thesame with the value gotten.

The correct option is D.

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3 years ago
Multiplying by which number is equivalent to finding 15%?
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3 years ago
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zmey [24]

Answer:

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Step-by-step explanation:

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7 0
3 years ago
The points R(−4, −1) and S(2, −5) are two vertices of right triangle RST. The hypotenuse of the triangle is RS.
Norma-Jean [14]
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max2010maxim [7]
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Hope it helped
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