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LekaFEV [45]
3 years ago
14

Find the magnitude and direction of CD for the given coordinates. Round answers to the nearest tenth.

Mathematics
1 answer:
wlad13 [49]3 years ago
6 0
CD = <8-1, -9-(-4)> = <7, -5>
|CD|= \sqrt{7^2+(-5)^2} = \sqrt{74} = 8.6
\theta=\tan^{-1} (\frac{-5}{7})= -35.5\°
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P(5,3); y=4x<br><br>if you help me I will be thankful forever pls
horrorfan [7]
Y= -1/4x + 4.25, perdendicular then it must be the opposite of 4x which is -1/4. Then you multiply it with 5 and then add or subtract a number so you can find 3. So -1/4× 5 + 4.25= 3. Here you gooo!
6 0
2 years ago
Helppp!!!!laura is playing a card game with her friend.she will draw two cards from those pictured.
puteri [66]

Answer:

10

30%

Step-by-step explanation:

In this case it would be the combination of 2 taken from 5.

That is, when n = 5 and r = 2

nCr = n! / r! * (n-r)!

replacing

5C2 = 5! / (2! * 3!)

5C2 = 10

Which means that the sample space is 10 possible combinations.

the probability that the card you draw is even is 3/5, since there are 3 even cards that exist and 5 is the total number of cards.

Now, so that both are for it would be the multiplication of the previous probability and 2/4 because an even card and a card in general have already been drawn:

(3/5) * (2/4) = 0.3

So the probability that both are even is 30%

5 0
3 years ago
A drink contains 20% cranberry juice and the rest is apple juice. What is the ratio of cranberry juice to apple juice? A.1:20 B.
yarga [219]
20% of the juice is cranberry
80% of the juice is apple
Our ratio would be 20:80
We can simplify it and it will become
1:4

So your answer would be B. 1:4

I hope this helps :)
6 0
3 years ago
How would u factorise these?!?
Tcecarenko [31]
You can pull out a greatest common factor (GCF).
1. GCF: x
2. GCF: p
3. GCF: 8
3 0
3 years ago
Read 2 more answers
A study of bone density on 5 random women at a hospital produced the following results.
IRINA_888 [86]

Answer:

- 0.9503 ; r is not statistically significant ; 0.9031

Step-by-step explanation:

Given the following :

Age (X) :

37

41

57

65

73

Bone density (Y)

355

345

340

315

310

Using the pearson R value calculator :

The r value of the data % - 0.9503.

This value depicts a very strong negative correlation between age and density of bone.

Using the pearson R calculator to obtain the P- value, the P value obtained is .01332 and hence the r is not significant at P < 0.01.

The Coefficient of determination R^2 can be obtained by getting the square value of R

R^2 = - 0.9503^2

R^2 = 0.90307009

R^2 = 0.9031

8 0
3 years ago
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