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Dmitriy789 [7]
2 years ago
9

Work out x when the area is root 4 2^2 and angle C is 45 and ab are (x+2)(2x-3)

Mathematics
1 answer:
aleksandrvk [35]2 years ago
7 0

Answer:

  • x = 2.41

Step-by-step explanation:

<u>Area formula:</u>

  • A = 1/2bh

<u>The height is:</u>

  • h = (x + 2)sin 45° = √2(x + 2)/2

<u>Substitute the area value an set an equation:</u>

  • 4√2 = (2x - 3)√2(x + 2)/2
  • (2x - 3)(x + 2) = 8
  • 2x² + x - 6 = 8
  • 2x² + x - 14 = 0
  • D = 1 + 4*2*14 = 113
  • x = (-1 + √113)/4 = 2.41 (rounded)    

Note. the second root ignored as negative

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There are three dials on a combination lock. Each dial can be set to one of the numbers 1, 2, 3, 4, 5 The three digit number 553
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<h3>How to determine the number of different locks?</h3>

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How do you measure the diameter of four steel rods and than compare the measurement? Thank you!
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3 years ago
Isosceles trapezoid ABCD has legs AB and CD and base BC. If AB=5y - 10, BC=6y+2, and CD = 2y+8, find the value of Y.
pishuonlain [190]

Hello from MrBillDoesMath!

Answer:

Choice C    (6)

Discussion:

Since it is an isosceles trapezoid the length of the two legs (i.e.  AB = 5y-10 and CD = 2y+8) are equal.  In other words,

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Regards,  

MrB


3 0
3 years ago
Find the value of each missing variable?
LenKa [72]

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