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Dmitry [639]
2 years ago
6

Calculate the area of a triangle ABC with altitude CD, given A (-3, -4), B (-6, 2), C (0, 0), and D (-4, -2). A. 14 square units

b. 15 square units c. 18 square units d. 20 square units
Mathematics
2 answers:
kobusy [5.1K]2 years ago
8 0

Answer:

i used an online caluculator and its 15

Step-by-step explanation:

lina2011 [118]2 years ago
5 0

Answer:

15

Step-by-step explanation:

took the test

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irina1246 [14]
Pie equals 3.14 so if you turn that into a fraction you will get your answer
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2 years ago
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I really need help I don't know what to do I pay attention but don't understand
mrs_skeptik [129]

It means like what number equals that number.Use multiplication to figure these out.


Example : 9,15. Factors for 9-9,1,3  .Factors for 15-1,15,3,5


Hope this helps !

6 0
3 years ago
The American Bankers Association reported that, in a sample of 120 consumer purchases in France, 48 were made with cash, compare
tatuchka [14]

Answer:

Step-by-step explanation:

Hello!

You have the information for two variables

X₁: Number of consumer purchases in France that were made with cash, in a sample of 120.

n₁= 120 consumer purchases

x₁= 48 cash purchases

p'₁= 48/120= 0.4

X₂: Number of consumer purchases in the US that were made with cash, in a sample of 55.

n₂= 55 consumer purchases

x₂= 24 cash purchases

p'₂= 24/55= 0.4364

You need to construct a 90% CI for the difference of proportions p₁-p₂

Using the central limit theorem you can approximate the distribution of both sample proportions p'₁ and p'₂ to normal, so the statistic to use to estimate the difference of proportions is an approximate standard normal:

[(p'₁-p'₂) ± Z_{1-\alpha /2} * \sqrt{\frac{p'_1(1-p'_1)}{n_1} +\frac{p'_2(1-p'_2)}{n_2} }]

Z_{0.95}= 1.648

[(0.4-0.4364)±1.648 * \sqrt{\frac{0.4(1-0.4)}{120} +\frac{0.4364(1-0.4364)}{55} }]

[-0.1689;0.0961]

The interval has a negative bond, it is ok, keep in mind that even tough proportions take values between 0 and 1, in this case, the confidence interval estimates the difference between the two proportions. It is valid for one of the bonds or the two bonds of the CI for the difference between population proportions to be negative.

I hope this helps!

8 0
3 years ago
What is 67.50 with 5 percent sales tax
Sindrei [870]
3.375 is your answer
6 0
3 years ago
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FIRST TO ANSWER GETS BRAINLEIST (last one for the night!)
ch4aika [34]

Answer:

I think its the 2nd

Step-by-step explanation:

its the one with 9 because what's listed on the number line is 2 and the other one is 2 because 9 squared is 3 and over 3 is 1.HOPE THIS HELPED

4 0
3 years ago
Read 2 more answers
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