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meriva
2 years ago
15

PLS HELPP ITS URGENT

Mathematics
2 answers:
WITCHER [35]2 years ago
8 0

Answer:

Step-by-step explanation:

The angles between the parallel sides add up to 180 degrees.

So 180-70 = 110 degrees.

DedPeter [7]2 years ago
4 0

▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄

Let,

The unknown angle measure be x°.

We know that,

Sum of all angles of a Quadrilateral measures 360°.

So,

⇒∠QPR + ∠PSR + ∠SRQ + ∠RQP = 360°

⇒ 120° + 60° + 70° + x° = 360°

⇒ 180° + 70° + x° = 360°

⇒ 250° + x° = 360°

⇒ x° = 360° - 250°

⇒ x° = 110°

Therefore, the names of the angles & their values will be,

⇒∠QPR = 120°

⇒∠PSR = 60°

⇒∠SRQ = 70°

⇒∠RQP = 110°

▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄

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Answer:

  1. Mean score=120

Step-by-step explanation:

  1. Areas of a triangle add upto 180degrees (63+78+x=180) 141+x= (x=180-141) x=39
  2. Areas on a straight line add upto 180degrees

180-78=102

180-63=117

180-39=141

  1. 102+117+141=360
  2. Mean=360/3 =120

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Option D: \{(-9,8),(-5,-8),(-7,8),(-6,-8)\} are the ordered pairs represents a function.

Explanation:

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Option A: \{(-12,8),(-15,8),(-5,-8),(-12,-8)\}

A relation is said to be a function if each element of x is related to exactly one element in y.

From this set of ordered pairs, it is obvious that the element -12 of x is related to two different element in y.

Thus, the ordered pairs \{(-12,8),(-15,8),(-5,-8),(-12,-8)\} is not a function.

Hence, Option A is not the correct answer.

Option B: \{(8,-9),(-8,-5),(8,-7),(-8,-6)\}

From this set of ordered pairs, it is obvious that the elements -8 and 8 of x are related to two different element in y.

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Hence, Option B is not the correct answer.

Option C: \{(13,-3),(13,0),(13,-1),(13,-1)\}

From this set of ordered pairs, it is obvious that the element 13 of x is related to three different element in y.

Thus, the ordered pairs \{(13,-3),(13,0),(13,-1),(13,-1)\} is not a function.

Hence, Option C is not the correct answer.

Option D: \{(-9,8),(-5,-8),(-7,8),(-6,-8)\}

A relation is said to be a function if each element of x is related to exactly one element in y.

From this set of ordered pairs, it is obvious that the each element of x is related exactly one element in y.

Thus, the ordered pairs \{(-9,8),(-5,-8),(-7,8),(-6,-8)\} is a function.

Hence, Option D is the correct answer.

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3 years ago
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