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2 years ago

the diagram shows a star made by surrounding regular octagon with triangle. explain why angle A must be 135 degrees

Mathematics

1 answer:

tatiyna2 years ago

8 0

straight line is 180

180 - 45 = 135

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3 years ago

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3 years ago

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Y = x - 2 y = 3x + 4

faust18 [17]

Answer:

How does it need solved? By graphing? Substitution?

Step-by-step explanation:

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3 years ago

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1.- What type of parabola is this?

xz_007 [3.2K]

Answer:

Part 1

Sideways or "horizontal" parabola with a horizontal axis of symmetry.

Part 2

The vertex is the turning point: (-3, 1)

Part 3

Vertex form of a horizontal parabola:

$x=a(y-k)^2+h$

where:

(h, k) is the vertex
a is some constant
If a > 0 the parabola opens to the right.
If a < 0 the parabola opens to the left.

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$\implies -1=a(2-1)^2-3$

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Part 4

Equation for the given parabola in vertex form:

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Equation in standard form:

$x=2y^2-4y-1$

4 0

2 years ago

Find the value of x and y. help me out ASAP!!

il63 [147K]

Step-by-step explanation:

13x + 15 = 19x - 9 ( being opposite sides of parallelogram)

19x - 13x = 15 + 9

6x = 24

x = 24 / 6

x = 4

4y + 7° + 10y - 37° = 180° {being co-interior angles }

14y = 180° - 7° + 37°

14y = 210°

y = 210°/ 14

y = 15°

Hope it will help :)

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3 years ago