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Arlecino [84]
2 years ago
8

The angles shown below are supplementary:

Mathematics
1 answer:
alina1380 [7]2 years ago
3 0

Answer:

12

Step-by-step explanation:

supplementary angle=180°

180-60=120°

120°/10=12°

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A) Find a polynomial, which, when added to the polynomial 5x2–3x–9, is equivalent to: 18
VMariaS [17]

Answer:

a) -5x^{2}+3x+27

b) -5x^{2}+3x+9

Step-by-step explanation:

a) Let the required polynomial be p(x).

We have the relation, 5x^{2}-3x-9 + p(x) = 18

i.e. p(x) = 18 -5x^{2}+3x+9

i.e. p(x) = -5x^{2}+3x+27


b) Let the required polynomial be q(x).

We have the relation, 5x^{2}-3x-9 + q(x) = 0

i.e. q(x) = 0 -5x^{2}+3x+9

i.e. q(x) = -5x^{2}+3x+9

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3 years ago
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Look at the angles marked a, b, c and d.
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Answer:

acute angle : C

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right angle : D

obtuse angle : A

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2 years ago
PLEASE HELP. I AM TRULY STUMPED.
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7 0
3 years ago
6x^2 + 66x + 60 factor completely
kiruha [24]

Hi! Let me help you!

  • Remember, factoring looks like so:
  • ab+ac=a(b+c)
  • So, we need to find the greatest common factor (G.C.F.) of the polynomial.
  • In this case, 6 is the GCF, so we factor it out:
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  • Divide 6, 66 and 60 by 6:
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<u>Answer:</u>

x²+11x+10

Hope you find it helpful.

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I need help please ​
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Answer:

Step-by-step explanation:

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8)  ∠2 = 30    {Vertically opposite angles are congruent}

9) In ΔLMN,

∠L + ∠N + ∠M = 180   {angle sum property of triangle}

50 + 30 + ∠M = 180

       80 + ∠M = 180

                ∠M = 180 - 80

                ∠M = 100°

10) Sum of exterior angle of a triangle equals to sum of opposite interior angles.

∠B + ∠A = ∠BCD

30 +   ∠A = 80

        ∠A  = 80 - 30

      ∠A = 50

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