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2 years ago

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 corresponding 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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Express ln 32 - ln 8 as a single natural logarithm

ivanzaharov [21]

$\bf \textit{Logarithm of rationals}
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3 years ago

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Y=2x-1 y=-3x+14 Solve for y

LUCKY_DIMON [66]

Y=2x-1
y=-3x+14

First you would substitue one of the y's for the other so
2x-1=-3x+14

no you would solve for x...
add one on both sides
2x=-3x+15

now add 3x to both sides which becomes
5x=15

divide 5 on both sides which gives you x=3

now to solve for y plug into any one of the equations(doesn't matter which one) from before 3 for x and solve
y=2(3)-1
y=6-1
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And that is you answer y=5

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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

mean of scores = $\frac{Sum total of scores}{Number of students}$

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:

Step-by-step explanation:

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Answer:

Step-by-step explanation:

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