I will mark brainiest whoever answers this correctly

some patients participated in a clinical trial for a new drug to treat osteoporosis. A patient is selected at random. The probability that the patient had no change in his bone mass density is 7/13, the probability that he had a slight reduction in his bone mass density is 1/k and the probability that he had a significant reduction in his bone mass density is 1/2k. Find the value of k

Answers

Answer 1

Answer:

k = 3.9

Step-by-step explanation:

Since the three possible outcomes are given. Therefore, the sum of all the probabilities of the three possible outcomes will be equal to one:

[tex]\frac{7}{13} +\frac{1}{k}+ \frac{1}{2k} = 1 \\\\\frac{1}{k} \frac{1}{2k} =1-\frac{7}{13}\\\\\frac{3}{2k} \frac{5}{13}\\\\2k = \frac{(13)(3)}{5}\\\\k = \frac{39}{(5)(2)}\\[/tex]

k = 3.9


Related Questions

HELPPPP I DONT HAVE A LOT OF TIMW LEFT PLEAEE DONT SEND ME A FILE I DOESNT WORK FOR ME PLEASE JUST HELPP ME

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it's the first answer (1,-2) (4,-2) (1,-4) (4,-4)

If i have 22 more questions to go out of 42 what question am i on?

Answers

Answer: 20

Step-by-step explanation:

Help me please I don't understand

Answers

Answer:

Q1: E N W G Y U

Q2: R D S Q

Q3: X

Q4: B M F P L

1. N 3. L 5. Q 7. W

2. G 4. B 6. E 8. Y

9. S: (-5,+5) 11. D: (-4,+2) 13. M: (+1,-5) 15 X: (-7,-8)

10. R: (-1,+3) 12. U: (+1,+1) 14. P: (+8,-4) 16. F: (+7,-6)

I can't add the points on the graph tho sorry:(

Riley is starting her own laundry business. Riley thinks she will do a better job than her competitors, so she thinks she can charge $16.80 per hour. If she knows she will only be able to work 40 hours per week, how much money will she earn each week?

Answers

Answer:

dont copy thos links they are a Scamm

please help tysm !!!!!!!

Answers

for concavity it’s concave up, x intercepts are x=1 and x=-3

The woods behind Adam's house were 12 miles wide and 25 miles long. What is the area and perimeter
of the woods?

Answers

Answer: Perimeter = 74

Step-by-step explanation:

create an expression that when combined equals 5x+2y
(must be at least 3 terms)

Answers

you could do 3x+y+2x+y

here is the next one. sorry

Answers

Answer:

$5.30

Step-by-step explanation:

23.85/9=$2.65

2.65*2=$5.30

Answer:

I don't know if this is right but I got $5.30.

Step-by-step explanation:

I did 23.85/9 to get how much each pane is than I multiplied by 2 to get the cost of the 2 new panes.

23.85/9= 2.65

2.65*2 = 5.3

Find cos(a) in the triangle.
Choose 1 answer:
21
А. 21/29
B. 20/29
C. 20/21
D. 21/20

Answers

[tex]{\huge{\boxed{\mathcal{\green{ANSWER}}}}} \\ cos( \alpha ) = base \div hypotenuse \\ \\ base \: = \: 21 \\ \\ hypotenuse = 29 \\ \\ cos( \alpha ) = 21 \div 29 \\ \\ {\huge{\boxed{\mathfrak{\red{hope \: it \: helps \: }}}}}[/tex]

A water park keeps track of the number of times each visitor goes down water slides during their visit . The data shows the number of times 12 visitors went down a water slide.

4, 22, 16, 10, 11, 20, 20, 12, 6, 3, 11, 1



Create a histogram of this data.

To create a histogram, hover over each age range on the x-axis. Then click and drag up to plot the data.

Answers

Answer:

Refer to image

Step-by-step explanation:

When creating a histogram it is best to create a range for the different variables that are available.

So for the sake of covering all the possible ranges from 1 - 22, let's divide it into 5 categories.

0 - 5        

6 - 10  

11 - 15

16 - 20

21 - 25

Now that we have set ranges for the different variables, we then find the frequencies.

0 - 5  : 3      

6 - 10 : 2

11 - 15 : 3

16 - 20 : 1

21 - 25 : 3

Now that we have all the values we can then create our histogram

/

A television originally cost
$
2660
. It goes on sale at
10
%
off the original price.

How much do you save when you buy the television now?
Saving = $

What does the television cost now?
Cost now = $
Submit Answer

Answers

Answer:

You save $266. The television costs $2394.

Step-by-step explanation:

10% off the original price is $266. The television is 10% off, meaning the new price is 90% of the original price. Therefore, you can subtract $2660 - $266 or multiply 90% × $2660.

does any one know 1/2x−7=1/3(x−12)

Answers

Answer:

18

Step-by-step explanation:

I did the math and that should be the answer!!

Please help Instruction are on the top

Answers

Answer:

1. -0.63 is one choice you can do

2. 1/8 is smaller than 1/4

3. 13% is a number that fits in the blank

4. 0.2 (or 1/5 or 20%) can complete it

Step-by-step explanation:

 

PLEASE HELP. Will give 70 points!!! Demonstrate In A Brief Paragraph How The Search To Explain Planetary Orbits Exemplifies The Scientific Method and the use of models.

Answers

People firstly believe that the planets move in a circular orbit until Newton came up with his hypothesis by inventing calculus so that we could understood and calculated planetary orbits and their accuracy.

Explanation:

Everyone assumed the planets were perfect circles until Newton came up with an idea. Slowly people would make maps of the orbits that added circles on circles, and they could never really explain about the movement of the planet. They simply say that planets move on circles but they lacked the math to explain or prove it. Then Newton came up with an idea of inventing calculus so that we could understood and calculated planetary orbits and their accuracy.

Firstly people used their observations and say that the orbits looked like circles, then they developed their models and did the math, and proposed their hypothesizes which were wrong, until Newton came along and tried to match a model that used elliptical orbits and invented the math that allowed him to make predictions with it. His model worked for most planets.

However he could not explain about the planet Mercury for instance since it was a very strange orbit. Then after the Einstein's theory of General Relativity he could also explain very deeply about it.

Scientists and Astronomers made hypothesizes that there was another planet orbiting too close to the sun to see with telescopes, called Vulcan, that explained mercury's orbit before Einstein's theory. Then long after we had telescopes which was good enough to see if there was a planet orbiting closer to the sun than mercury.  

NO WEBSITES/ fake links or your getting reported! Help me with ALL the problems!

Answers

Answer:

5 divided by 8 is 0.625

1 divided by 2 is 0.5

3 divided by 5 is 0.6

7 divided by 4 is 1.75

4 divided by 6 is 0.666666666 or 0.6 with the underline if u print this paper out or 0.666

Step-by-step explanation:

u will have to do the model part but i hope i helped

PLEASE HELP ASAPPP ITS URGENT

Answers

Answer:

Step-by-step explanation:

2^-70/4^14

1/(2^70*4^14)

answer is b

9514 1404 393

Answer:

  B  1/(2^70·4^14)

Step-by-step explanation:

The applicable rules of exponents are ...

  (a^b)^c = a^(bc)

  a^-b = 1/a^b

__

  [tex]\left(\dfrac{2^{-10}}{4^2}\right)^7=\dfrac{2^{-10\cdot7}}{4^{2\cdot7}}=\dfrac{2^{-70}}{4^{14}}=\boxed{\dfrac{1}{2^{70}\cdot4^{14}}}[/tex]

What is the first term of the quotient of the following division problem?
(х – 1) = (х + 2)

Answers

Answer:

I think the answer is C. x^2

Look at the picture

Which of the numbers shown in the box below is the
largest?

Answers

Answer:

13/2

Step-by-step explanation:

19/3 = 6.33333...

31/5= 6.2

13/2 = 6.5

25/4 = 6.25

Therefore 13/2 is the answer. Hope this helps!

Peter invested $1860 for 10 months at a rate of 3.8%. How much interest did he earn?

Answers

Peter invested $1860 for 10 months at a rate of 3.8%. How much interest did he earn?????

He would end up with 18,600

Answer: he earned 10 percent intrest.

Find the length of all segments in the triangle
Find LA, AE, SL

Answers

AE= 6.93 - 4.63 = 2.3 cm

LA: a2 + b2 = c2
(3.26)2 + (2.3)2 = LA2
10.63 + 5.29 = LA2
15.92 = LA2
sqrt 15.92 = LA
So, LA= 3.98 cm


LS: a2 + b2 = c2
(3.98)2 + (b)2 = (6.93)2
b = sqrt (6.93)2 - (3.98)2
So, LS = 5.67 cm

Help me plsssssss????

Answers

Answer:

CBD is 120 degrees

Step-by-step explanation:

x=30

4x30+30+30=180

Answer: 120°

Step-by-step explanation:

x + 4x + x = 180° (Since the sum of a straight line is 180°)

6x = 180°

x = 30°

To find the angle of 4x, we need to multiply 4 x 30°

120°

I need help with this

Answers

Answer:

c

Step-by-step explanation:

it just is the answer have a nice day

Answer:

c

Step-by-step explanation:

c

100 points
Choose the different ways that a graph can be misleading.

The y-axis starts at zero and uses consistent intervals.
Different bar heights are used on the same graph.
The y-axis doesn't start at zero.
The intervals on the y-axis are too large.
Different bar widths are used on the same graph.
The y-axis starts at zero but has different intervals.

Answers

Just a little note you put 50 points and not 100

The y-axis doesn't start at zero.

The intervals on the y-axis are too large.

Different bar widths are used on the same graph.

The y-axis starts at zero but has different intervals.

Answer:

The y-axis starts at zero and uses consistent intervals.

Step-by-step explanation:

Find the slope of the line.

-4,1
1,-2

Answers

Answer: finding slope (-4, 1), (1,-2) : m= -3/5

Given P(A)=0.64P(A)=0.64, P(B)=0.4P(B)=0.4 and P(A\cap B)=0.356P(A∩B)=0.356, find the value of P(A\cup B)P(A∪B), rounding to the nearest thousandth, if necessary.

Answers

Answer:

Step-by-step explanation:

P(A U B) = P (A) + P (B) - P (A and B)

= 0.64 + 0.4 - 0.356

= 0.684

The value of P(A∪B) is 0.684

What is probability?

Probabilities are used to determine the chances of events

The given parameters are:

P(A)=0.64,

P(B)=0.4

P(A∩B)=0.356

To find the value of P(A∪B), we make use of the following formula

P(A∪B) = P(A) + P(B) - P(A∩B)

So, we have:

P(A∪B) = 0.64 + 0.4 - 0.356

Evaluate the expression

P(A∪B) = 0.684

Hence, the value of P(A∪B) is 0.684

Read more about probability at:

https://brainly.com/question/25870256

A triangle has side length measurements of 7 ft., 2 ft., and 5
feet. Can this form a triangle? Explain why or why not.

Answers

Answer:

No

Step-by-step explanation:

The Triangle Inequality Theorem states that the sum of any 2 sides of a triangle must be greater than the measure of the third side.

2 + 5 is only equal to 7

not greater than 7

how to evaluate 5a + 3 ?

Answers

Answer:

15a

Step-by-step explanation:

Multiply  

3

by  

5

=

15

a

wrongsubject Which conditions are needed for a hurricane to form?


A.

warm, dry air rising over warm areas on the land


B.

warm, dry air rising over warm areas in the ocean


C.

warm, moist air rising over warm areas on the land


D.

warm, moist air rising over warm areas in the ocean

Answers

The answer is D

For one to form, there needs to be warm ocean water and moist, humid air in the region. When humid air is flowing upward at a zone of low pressure over warm ocean water, the water is released from the air as creating the clouds of the storm. As it rises, the air in a hurricane rotates.

HELP FOR BRAINLIST!!!!!!!!!

Answers

Answer:

literally none of these are correct i'm in college and none of these are right. bro talk to your teacher

Step-by-step explanation:

The above equation is equal to 6c x 3. NONE OF YOUR OPTIONS SIMPLIFY TO THAT???

anyone know the answer to this?????

Answers

Answer:

15

Step-by-step explanation:

because you add them all up on god

Answer:

im not good at math

Step-by-step explanation:

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