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Dmitrij [34]
3 years ago
10

Factor x2 – 19x – 20 completely.

Mathematics
1 answer:
Naddik [55]3 years ago
6 0

Answer:

Step-by-step explanation:

x^2-19x-20

=x^2-(20-1)x-20

=x^2-20x+x-20

=x(x-20)+1(x-20)

=(x-20)(x+1)

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Considering the following statements, what is X → Z? X → Y: If the sum of the interior angles of a shape is 180°, then it's a tr
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Answer:

Step-by-step explanation:z=180

Interior angle =180

8 0
3 years ago
Two airplanes leave an airport at the same time, one going northwest (bearing 135°) at 421 mph and the other going east at 384 m
Papessa [141]
I am not sure if I am correct.
I think that the angles did not help to solve the problem, ( it makes an obtuse angle)
and the unit rate is 421 mph and 384 mph.

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or
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Answer: 1610 miles
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3 years ago
13. The red triangle shown is not
andreyandreev [35.5K]

Answer:

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7 0
3 years ago
Help please! Do not answer if you are not going to help me
kirza4 [7]

9514 1404 393

Answer:

  12. (x, D, E, F) = (8, 38°, 75°, 67°)

  13. (x, P, Q, R) = (13, 126°, 30°, 24°)

Step-by-step explanation:

The sum of angles in a triangle is 180°. We choose to write the equations assuming all measures are degrees.

12. (5x -2) +(9x +3) +(11x -21) = 180

  25x = 200 . . . . . . . add 20, simplify

  x = 8 . . . . . . . . . divide by 25

Then the angle measures are ...

  ∠D = 5(8) -2 = 38°

  ∠E = 9(8) +3 = 75°

  ∠F = 11(8) -21 = 67°

__

13. (10x -4) +(4x -22) +(x +11) = 180

  15x = 195 . . . . . . . . . . add 15, simplify

  x = 13 . . . . . . . . . divide by 15

Then the angle measures are ...

  ∠P = 10(13) -4 = 126°

  ∠Q = 4(13) -22 = 30°

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4 0
3 years ago
Surface area of a triangular prism
iragen [17]

Answer:

96

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
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