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Semenov [28]
3 years ago
14

Answer before 6 am Tomorrow

Mathematics
1 answer:
Rzqust [24]3 years ago
6 0

The ex- suffix often correlates a word to mean "outside", while the in- suffix often correlates a word to mean "inside". An exterior angle of a polygon would mean "an angle outside of a polygon". An interior angle of a polygon would mean "an angle inside of a polygon". Three exterior angles of this polygon would be angle B, angle D, and angle A. This is because these angles are outside of the polygon due to the extending lines from the shape. Two interior angles of this polygon would be angle 6 and angle 8 (explanation was given when I first began answering this question). Angle 9 would be exterior since it is outside of the polygon. Two exterior angles of the polygon that are congruent are angle D and angle 9, since they are both 90 degrees (right angles).

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18x-16y=-312 <br> 78x-16y=408
patriot [66]
That is system of equation.
8 0
3 years ago
Which point is not on the graph represented by y=x^2+2x-4
Illusion [34]
(-6,20) \\&#10;x=-6 \\ y=20 \\ \Downarrow \\&#10;20 \stackrel{?}{=} (-6)^2+2 \times (-6)-4 \\&#10;20 \stackrel{?}{=} 36-12-4 \\&#10;20 \stackrel{?}{=} 20 \\&#10;20 = 20 \\&#10;\hbox{the point is on the graph}

(-4,4) \\&#10;x=-4 \\ y=4 \\ \Downarrow \\&#10;4 \stackrel{?}{=} (-4)^2+2 \times (-4)-4 \\&#10;4 \stackrel{?}{=} 16-8-4 \\&#10;4 \stackrel{?}{=} 4 \\&#10;4 = 4 \\&#10;\hbox{the point is on the graph}

Both points are on the graph.
3 0
3 years ago
Pls help me not fail
nignag [31]

Answer:

D

Step-by-step explanation:

Using the Cosine rule to find AC

AC² = BC² + AB² - (2 × BC × AB × cosB )

      = 18² + 12² - ( 2 × 18 × 12 × cos75° )

      = 324 + 144 - 432cos75°

      = 468 - 111.8

      = 356.2 ( take the square root of both sides )

AC = \sqrt{356.2} ≈ 18.9

-----------------------------------------

Using the Sine rule to find ∠ A

\frac{18}{sinA} = \frac{18.9}{sin75} ( cross- multiply )

18.9 sinA = 18 sin75° ( divide both sides by 18.9 )

sinA = \frac{18sin75}{18.9} , then

∠ A = sin^{-1} ( \frac{18sin75}{18.9} ) ≈ 66.9°

4 0
3 years ago
Please help with this Khan Question :)
astraxan [27]

Answer:

the answer is A

Step-by-step explanation:

4 0
2 years ago
What is the first step in solving the equation by factoring?
Art [367]

The answer is D. This is because all of the variables must be on one side so it can be factored.


8 0
3 years ago
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