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Maslowich
3 years ago
5

Ron gets $5 on the first day at work, the square of that amount on the second day, and three times the amount of the second day

on the third day. How much does Ron earn in three days?
A. $45
B. $75
C. $105
D. $125
Mathematics
2 answers:
lozanna [386]3 years ago
7 0

5+5^2+3(5^2)=105

first day is 5; second day is the square of 5, so it's 25; third day is the 3 times of the second day, so it's 25x3, which is 75. Add these 3 days together to get the answer, which is 105 dollars.


Read more on Brainly.com - brainly.com/question/1580718#readmore

Anton [14]3 years ago
3 0

first day is 5; second day is the square of 5, so it's 25; third day is the 3 times of the second day, so it's 25x3, which is 75. Add these 3 days together to get the answer, which is 105 dollars.

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Answer:

  y = √55

Step-by-step explanation:

All the triangles are similar, so the ratio of short side to hypotenuse is the same for all:

  5/y = y/(5+6)

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_____

<em>Comment on the geometry</em>

There are three "geometric mean" relationships that apply to this geometry.

  1. the altitude BD is the geometric mean of BC and BA (√30)
  2. the long side of the large triangle is the geometric mean of the longer segment of the hypotenuse and the whole hypotenuse (x = √66)
  3. the short side of the large triangle is the geometric mean of the shorter segment of the hypotenuse and the whole hypotenuse (y = √55)

If you were aware of the last of these relationships, you could write down the answer without any "work."

  y = √(5(5 +6)) = √55

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The geometric mean is the n-th root of the product of n numbers. When there are 2 numbers, it is the square root of their product.

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3 years ago
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Move -2/d+2 onto the other side, changing it into 2/d+2.

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Let the empty side equal zero.

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Then add that to -3d.

\frac{2d-2}{(d+2)(d+4)}

Multiply 0 by d+2 and d-4 to get 2d-2 by itself.

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Answer:

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