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xeze [42]
3 years ago
10

Please I need help!!!

Mathematics
1 answer:
inessss [21]3 years ago
3 0

Answer:

  44 ft

Step-by-step explanation:

There are a couple of ways this can be worked. You could find the height of the tower, then use the Pythagorean theorem to find the wire length.

Or, you can find the wire length for the smaller triangle and scale up the result to the larger triangle. We choose this method.

The length of the wire (w) from the stake to the top of the pole is given by the Pythagorean theorem:

  w² = 4² +7² = 16 +49 = 65

  w = √65 . . . . . . take the square root

The base of the larger triangle is 18+4 = 22. The scale factor from the smaller to larger triangle is the ratio of base lengths: 22/4 = 11/2

The overall length of the guy wire is this ratio times "w" ...

  (11/2)√65 ≈ 44 . . . . feet

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A company has determined that its weekly profit is a function of the number of items that it sells. Which equation could represe
Cerrena [4.2K]

Answer:

B. y= -x^2 + 50x - 300

Step-by-step explanation:

Options given

A. y^2=4x^2 - 100

B. y= -x^2 + 50x - 300

C. x= -y^2 - 400

D. x^2= -6y^2 + 200

We are to find profits (y) function in thousands of dollars if the company sells x items.

We will use elimination method to eliminate the wrong options above in order to find the correct answer

Option A. y^2= 4x^2 - 100 is used to find the square of the profit function

Option B. y= -x^2 + 50x - 300 is used to calculate profit (y) function

Option C. x= -y^2 - 400 is for the calculation of the items x sold

Option D. x^2= -6y^2 + 200 is to find items x sold squared.

Since, we are required to find the profit (y) function, option A, C and D will be eliminated.

We are left with option B which is the correct answer to the question.

The weekly profits (y) function in thousands of dollars when the company sells x items is

B. y= -x^2 + 50x - 300

7 0
3 years ago
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Answer:

9 feet, 108 inches, 274.32 cm, 2.7432 meters

Step-by-step explanation:

Not enough information is given to answer.

You didn't provide the list of "these" to choose from, but I can just list some potential answers I could see being an option.

3 yards = 9 feet [1 yard = 3 feet. 3 yards = 9 feet]

             9 feet is also 108 inches [1 foot = 12 inches. 9 feet = 108 inches]

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