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Liula [17]
2 years ago
11

Someone help mehhhh the image is the question

Mathematics
1 answer:
Veronika [31]2 years ago
8 0

9514 1404 393

Answer:

  • yes
  • LA; ΔBDA ≅ ΔBDC

Step-by-step explanation:

Segment BD is a leg of the right triangles. It is congruent to itself (whether or not it is marked). Angles A and C are <em>corresponding</em> acute angles in the right triangles. They are marked as congruent to each other.

The triangles are congruent by the LA theorem, applicable to right triangles. The congruency statement can be written as ...

  ΔBDA ≅ ΔBDC

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8 0
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LUCKY_DIMON [66]
Y=2x-1
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First you would substitue one of the y's for the other so
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3 years ago
A set of N = 20 exam scores has a mean of m = 50. The instructor discovered that an error was made grading one exam, so 20 point
tatuchka [14]

Answer:

The new mean for the exam scores is 51

Step-by-step explanation:

the mean can be calculated using the formula

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before the 20 points was added, the mean of the score was = 50.

Inserting this into the formula, we have:

50 = \frac{Sum total}{20 students}

from this, we can compute the sum total of the scores as

sum total = 50 × 20 = 1000

when the extra 20 marks is added, the sum of the entire scores will be changed to 1000 + 20 = 1020.

Hence the new mean will be computed as (New Sum total of scores / Number of students)

= \frac{1020}{20} = 51.

∴ The new mean of the scores is = 51

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Answer:

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Step-by-step explanation:

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Answer:

Step-by-step explanation:

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