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Nostrana [21]
3 years ago
8

What is the area of BCD?

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

Answer:

36

Step-by-step explanation:

The length is 12, and the height is 6

A = 1/2 * b*h

So area = 1/2 * 72 = 36

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

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John often speed while driving to school in order to arrive on time. The probability that he will speed to school is 0.75. If th
BartSMP [9]

Answer:

0.33

Step-by-step explanation:

Given the following :

P(speeding) = p(s) = 0.75

P(being stopped) = p(t)

P(speeding and gets stopped) = p(s n t) = 0.25

Find the probability that he is stopped, given that he is speeding is written as P(t | s) ;

P(t | s) = p(s n t) / p(s)

P(s n t) = 0.25

P(s) = 0.75

Hence,

P(t | s) = 0.25 / 0.75

P(t | s) = 0.33

3 0
3 years ago
Determine the minimum sample size required when you want to be 99% confident that the sample mean is within 0.50 units of the po
vfiekz [6]

Answer:

b. 224

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1-0.99}{2} = 0.005

Now, we have to find z in the Ztable as such z has a pvalue of 1-\alpha.

So it is z with a pvalue of 1-0.005 = 0.995, so z = 2.58

Now, find the margin of error M as such

M = z*\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

In this problem:

We want to find n, when M = 0.5, \sigma = 2.9 So

M = z*\frac{\sigma}{\sqrt{n}}

0.5 = 2.58*\frac{2.9}{\sqrt{n}}

0.5\sqrt{n} = 7.482

\sqrt{n} = 14.964

(\sqrt{n})^{2} = (14.964)^{2}

n = 223.9

The nearest integer number to 223.9 is 224.

So the correct answer is:

b. 224

6 0
3 years ago
- Abel says (62)3 = 65. Is he correct?<br> Explain.
expeople1 [14]

Answer and Step-by-step explanation:

Abel is incorrect. (62)3 denotes that the two terms are being multiplied. Instead of multiplying, Abel added these two terms.

The correct solution would be:

(62)(3)=186

8 0
3 years ago
Read 2 more answers
Is Joon lee soo a girl or boy name???​
blagie [28]

Answer:

Girl

Step-by-step explanation:

For me... it sound more like a girl but it could also be a boy's name

3 0
3 years ago
Solve the equation using the given method.
hammer [34]

Answer:

I have the step by step answer

7 0
3 years ago
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