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djyliett [7]
2 years ago
10

Answer the question in the picture?

Mathematics
1 answer:
RUDIKE [14]2 years ago
8 0

Answer:

100cm

Step-by-step explanation:

AC = 40

BC = 40 (definition of congruent)

AB = 1/2(40) = 20

40+40+20 = 100

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Please help with my guided practice ​
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7 0
2 years ago
A researcher selects all of the possible samples with n = 8 scores from a population and computes the mean, dividing by n, for e
Nadusha1986 [10]

Answer:

By the Central Limit Theorem, the average value for all of the sample means is 14.

Step-by-step explanation:

We use the central limit theorem to solve this question.

The Central Limit Theorem estabilishes that, for a random variable X, with mean \mu and standard deviation \sigma, the sample means of size n can be approximated to a normal distribution with mean \mu and standard deviation, which is also called standard error s = \frac{\sigma}{\sqrt{n}}

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3 0
3 years ago
Find the midpoint of the segment with the following endpoints. (10, 7) and (5, 4)
KatRina [158]

Answer:

\frac{15}{2} , \frac{11}{2}

Step-by-step explanation:-

To find the midpoint, the equation we use is:-

\frac{x1 +x2}{2} , \frac{y1 + y2}{2}

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x2 = 5

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y2 = 4

Substituting the values in the equation, we get:-

\frac{10+5}{2} , \frac{7+4}{2}

Coordinates of the midpoint---> \frac{15}{2} , \frac{11}{2}

8 0
3 years ago
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I think there are 77 if i can add correctly XD
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2 years ago
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6 0
2 years ago
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