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Afina-wow [57]
2 years ago
11

Giving 10 points need urgently

Mathematics
2 answers:
larisa86 [58]2 years ago
3 0

Answer:

{-2, - 1, 0, 1}

Step-by-step explanation:

The integer solutions will be {-2, - 1, 0, 1}

GalinKa [24]2 years ago
3 0

Answer:

<3<3<3<3<3<3<3

{-2, - 1, 0, 1}

<3<3<3<3<3<3<3

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In triangle KLM, if K is congruent to L, KL = 9x - 40, LM = 7x - 37, &amp; KM = 3x + 23, find x &amp; the measure of each angle.
Dennis_Churaev [7]

Answer: x = 15, ∠K = 45.7°, ∠L = 45.7°, ∠M = 88.6°

<u>Step-by-step explanation:</u>

Since ∠K ≅ ∠L, then ΔKLM is an isoceles triangle with base KL

 KM ≅ LM

3x + 23 = 7x - 37

       23 = 4x - 37

       60 = 4x

        15 = x

KM = LM = 3x + 23

               = 3(15) + 23

               = 45 + 23

               = 68

KL = 9x - 40

    = 9(15) - 40

    = 135 - 40

    = 95

Next, draw a perpendicular bisector KN from K to KL. Thus, N is the midpoint of KL and ΔMNL is a right triangle.

  • Since N is the midpoint of KL and KL = 95, then NL = 47.5
  • Since ∠N is 90°, then NL is adjacent to ∠l and ML is the hypotenuse

Use trig to solve for ∠L (which equals ∠K):

cos ∠L = \frac{adjacent}{hypotenuse}

cos ∠L = \frac{47.5}{68}

      ∠L = cos⁻¹ (\frac{47.5}{68})

      ∠L = 45.7  

Triangle sum Theorem:

∠K + ∠L + ∠M = 180°    

45.7 + 45.7 + ∠M = 180

       91.4     + ∠M = 180

                      ∠M = 88.6

       

7 0
3 years ago
(-31/2)-(-41/4)=-7/2-(17/4)=
Andrew [12]
Just forget about the first half, and just do the second half. It’s way easier. Answer is -7.75
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2 years ago
Suppose 81^x = 64.What is 27^x+1?
Genrish500 [490]
What does the <span>^ mean? I feel so stupid</span>
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3 years ago
Solve for X. Please help ASAP. I have no idea how to do this and it’s due really soon!!
Margarita [4]

Answer:

x=4

Step-by-step explanation:

14=3x+2

Move all terms that don't contain  x to the right side and solve.

8 0
2 years ago
I need help with this plz help me fast!!
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The answer is A I believe
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