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anyanavicka [17]
3 years ago
8

Identify an obtuse angle in this figure. Use the symbol"<" to name the

Mathematics
1 answer:
irina1246 [14]3 years ago
4 0

Answer:

Angles 10 and angles 7 are obtuse angles.

Step-by-step explanation:

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A quadratic equation is an equation that includes a squared term. For example, 3x + 7 = 28 is not a quadratic equation as it only has x, whereas x^2 + 5x + 6 = 0 is a quadratic equation as it includes x^2. Quadratic equations also usually have two solutions, whereas linear equations (like my first example) only have one.

I hope this helps! Let me know if you would like me to explain anything more :)
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2 years ago
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The vertices of a triangle are (-1,3) (6,3) and (-1,-4)
Travka [436]

Answer:

24.5 unit²

Step-by-step explanation:

Area of ∆

= ½ | x₁(y₂ - y₃) + x₂(y₃ - y₁) + x₃(y₁ - y₂) |

= ½ | (-1)(3 -(-4)) + 6(-4 -3) + (-1)(3 - 3) |

= ½ | -7 - 42 |

= ½ | - 49 |

= ½ (49)

= 24.5 unit²

<u>Method 2:</u>

Let the vertices are A, B and C. Using distance formula:

AB = √(-1-6)² + (3-3)² = 7

BC = √(-6-1)² + (-4-3)² = 7√2

AC = √(-1-(-1))² + (4-(-3))² = 7

Semi-perimeter = (7+7+7√2)/2

= (14+7√2)/2

Using herons formula:

Area = √s(s - a)(s - b)(s - c)

here,

s = semi-perimeter = (14 + 7√2)/2

s - a = S - AB = (14+7√2)/2 - 7 = (7 + √2)/2

s - b = (14+7√2)/2 - 7√2 = (14 - 7√2)/2

s - c = (14+7√2)/2 - 7 = (7 + √2)/2

Hence, on solving for area using herons formula, area = 49/2 = 24.5 unit²

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2 years ago
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PLEASE HELP ITS ALMOST DUE
taurus [48]

Answer:

we have"

\frac{q}{36}=\frac{16-q}{28}\\\\28q=36(16-q)\\\\28q=576-36q\\\\64q=576\\\\=>q=9

Step-by-step explanation:

6 0
3 years ago
Could someone please help me with these two???
Marina86 [1]
1. 3 Side-Side-Angle can not prove congruence
2. 1 Angle- Angle-Angle can not prove congruence
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2 years ago
A set of twenty cards is labeled 1 through 20. Anna draws one card randomly. What is the probability that Anna will draw an even
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Answer:

50% chance

Step-by-step explanation:

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