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Marina CMI [18]
3 years ago
9

Find the value of x A. does not exist B. -7 C. 26 D. 35

Mathematics
2 answers:
alexandr1967 [171]3 years ago
8 0

Answer:

A-does not exist  

Step-by-step explanation:

The pythagorian theorem :

  • 12²+x²= (x-2)²
  • 144+x²= x²-4x+4
  • 144-4+x²-x²= -4x
  • 140 = -4x
  • x = 140/-4
  • x= -35

That's absurd . A side cannot be negative since it's a distance

It was obvious from the beginning since one of the sides is greater than the hypotenus wich is impossible x≥x-2

d1i1m1o1n [39]3 years ago
8 0

Answer:

A. does not exist

Step-by-step explanation:

Since this is a right triangle we can find the value of x using Phytagorian Theorem

(x-2)^2 = 12^2 + x^2

x^2 -4x + 4 = 144 + x^2 (x^2 will be eliminated)

-4x = 144

x = -36 since the side lengths cannot be negative we select the option A which says it doesn't exist.

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Step-by-step explanation:

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8 0
3 years ago
um fazendeiro comprou a mesma quantidade de bezerros e vacas por 476.000. pagou 800 por um bezerro e 2000 por uma vaca,quantos a
marshall27 [118]

Answer:

  • <u>The farmer bought 170 animals of each species</u>.

Step-by-step explanation:

The translation of the question into English is:

<em>"a farmer bought the same number of calves and cows for 476,000. He/she paid 800 for a calf and 2000 for a cow, how many animals of each species did he/she buy?"</em>

<em />

<h2>Solution to the problem</h2>

<u>1. Choose the variable's name and translate the verbal statements into algebraic expressions:</u>

  • a) number of calves or cows: x
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  • c) He/she paid 2,000 for a cow: 2000x
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<u />

<u>2. Solve the equation:</u>

<u>a) Write the equation:</u>

    800x+2,000x=476,000

<u>b) Add like terms:</u>

    2,800x=476,000

<u>c) Use division property of equalities: divide both sides by 800:</u>

    x=476,000/2,800=170

<u>d) Translate the solution into a verbal statement:</u>

Since x represents both the number of calves and the number of cows, the answer is:

  • <u>The farmer bought 170 animals of each species</u>.
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goldenfox [79]

Answer:

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Step-by-step explanation:

  • 2x - 4y = -8

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