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ale4655 [162]
3 years ago
6

Just help me please I really need help please

Mathematics
2 answers:
Sonbull [250]3 years ago
8 0

Answer:

D

Step-by-step explanation:

add up all the inside angels, you'll get 122, subtract that from the total area of the triangle which is 180. you will have 58 for your missong inside triangle. the outside line makes 180 with the angel we just found, so subtract 58 from 180 and you get 122. check out Khan Academy for help.

natali 33 [55]3 years ago
3 0
Answer:D explanation: D
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Restless Leg Syndrome and Fibromyalgia
mixas84 [53]

Answer:

The probability that a person with restless leg syndrome has fibromyalgia is 0.1833.

Step-by-step explanation:

Denote the events as follows:

<em>F</em> = a person with fibromyalgia

<em>R</em> = a person having restless leg syndrome

The information provided is as follows:

P (R | F) = 0.33

P (R | F') = 0.03

P (F) = 0.02

Consider the tree diagram attached below.

Compute the probability that a person with restless leg syndrome has fibromyalgia as follows:

P(F|R)=\frac{P(R|F)P(F)}{P(R|F)P(F)+P(R|F')P(F')}\\\\=\frac{(0.33\times 0.02)}{(0.33\times 0.02)+(0.03\times 0.98)}\\\\=0.183333\\\\\approx 0.1833

Thus, the probability that a person with restless leg syndrome has fibromyalgia is 0.1833.

6 0
3 years ago
Factor –7x3 21x2 3x – 9 by grouping. what is the resulting expression? (3 – 7x)(x2 – 3) (7x – 3)(3 x2) (3 – 7x2)(x – 3) (7x2 – 3
juin [17]

The factors of the expression are \rm(3 - 7x^2)(x - 3)

<h3>How to find factors in the expression?</h3>

First group the first two terms and the last two terms together respectively.

The factors of the expression are given by;

\rm= -7x^3 + 21x^2 + 3x - 9\\\\=-7x^2(x - 3) + 3(x - 3)\\\\=(3 - 7x^2)(x - 3)

Hence, the factors of the expression are \rm \rm(3 - 7x^2)(x - 3).

To know more about factors click the link given below.

brainly.com/question/9645056

8 0
2 years ago
A PS4 costs $399. There is a 20% discount. What is the total cost?
Kruka [31]

Answer:

$319.2

Step-by-step explanation:

If you multiply 399 and 0.2 (because it's 0.2 out of 1) then you get 79.8. So you subtract 79.8 from 299 and get 319.2 dollars. I hope this helps! Please mark brainliest! <3

8 0
2 years ago
Read 2 more answers
What number will make 3/4 x 7/8 = 7/8 x true?
vivado [14]

Answer:

3/4

Step-by-step explanation:you divide both sides by 7/8, so x=3/4.

7 0
3 years ago
Read 2 more answers
Is this is a math question?
N76 [4]
Yes it is
it says mathematics 5 points
7 0
3 years ago
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