Suppose that 2% of the students in a school have head lice and the test for head lice is accurate 75% of the time. What is the probability that a student in the school has head lice, given that the test came back positive? Round your answer to the nearest tenth of a percent.

Answers

Answer 1

If 2% of the student actually have head lice, but only 75% of that 2% will actually have a positive test result, then your probability of a result coming back positive would 75% of 2% (0.75 x 0.02). The answer is 0.02 chance.

Related Questions

PLZ HELP!!!!!! (WILL GIVE BRAINLIEST!!!!)

Answers

You can use feet or inches because they are both on the diagram and they are both a part of the same measuring system. If you use inches, you would be using larger numbers, but if you used feet, you would be using fractions.

I hope this helps!

it could be in inches or feet. because inches can be converted to feet, and feet can be converted to inches.

Evaluate the expression 53 ÷ (13 − 8) × 2.

Numerical Answers Expected!

Answer for Blank 1:

Answers

53 ÷ (13-8) x 2
53 ÷ 5 x 2
10.6 x 2
21.2

Hope this helped!
let me know if I was wrong.

Answer: 21.2

hope this helped

what is 16 - 5y = 1 - 4y

Answers

this is the answer15=1y. It is this because you have to separate the 4 and 5y from the other two numbers because you can't do anything to it because they are not the same

The solution to the equation 16 - 5y = 1 - 4y is y = 15.

Here, we have,

To solve the equation 16 - 5y = 1 - 4y, you can follow these steps:

Step 1: Combine like terms on both sides of the equation.

16 - 5y = 1 - 4y

Step 2: Simplify by subtracting 1 from both sides.

16 - 5y - 1 = 1 - 4y - 1

15 - 5y = -4y

Step 3: Simplify further by subtracting -4y from both sides.

15 - 5y + 4y = -4y + 4y

15 - y = 0

Step 4: Isolate the variable term by subtracting 15 from both sides.

15 - y - 15 = 0 - 15

-y = -15

Step 5: Multiply both sides by -1 to solve for y.

-y * -1 = -15 * -1

y = 15

Therefore, the solution to the equation 16 - 5y = 1 - 4y is y = 15.

To learn more on equation click:

https://brainly.com/question/14468218

#SPJ6

What is one thousand less than 89,257

Answers

88,257 because 89,257-1000=88,257

Which relationship describes angles 1 and 2? Select each correct answer.
A. adjacent angles
B. Vertical angles
C. Linear pair
D. Complementary angles

Answers

Hi There!

Your answer is D. Complementary Angles

Have A Wonderful Month Of March!!

-XxNanaX

:P

D complementary angles

and

B vertical angles

hope this helps!

MATH:a basketball team needs 5 players. The team can choose from a group of 7 players. Explain how to find the number of combinations of players that can be on the team.

Answers

Combination Formula: (n = distinct objects, r = how many you pick) n!/(r!(n-r)!

So n = 7, r = 5

n! = 7! = 5040
R! = 5! = 120
(n-r) = 2! = 2
120*2=240
5040/240 = 21

21 combinations!

math class has 6 girls and 2 boys in the seventh grade and 3 girls and five boys in the right grade. the teacher randomly selects a 7th and a 8th grader. What is the probability that the student she selects are both girls

Answers

Final answer:

To find the probability of selecting two girls, multiply the probability of selecting a girl from the 7th grade class by the probability of selecting a girl from the 8th grade class.

Explanation:

To find the probability that the teacher selects two girls, we need to determine the probability of selecting a girl from the 7th grade class and the probability of selecting a girl from the 8th grade class, and then multiply those probabilities together.

Probability of selecting a girl from the 7th grade class = Number of girls in 7th grade class / Total number of students in 7th grade class = 6 / (6+2) = 6/8 = 3/4 = 0.75

Probability of selecting a girl from the 8th grade class = Number of girls in 8th grade class / Total number of students in 8th grade class = 3 / (3+5) = 3/8 = 0.375

Probability of selecting two girls = Probability of selecting a girl from 7th grade class * Probability of selecting a girl from 8th grade class = 0.75 * 0.375 = 0.28125

Final answer:

The probability of selecting two girls, one from each grade, is 9/32.

Explanation:

The probability of selecting a girl from the seventh-grade class is 6/8, since there are 6 girls out of 8 total students. Similarly, the probability of selecting a girl from the eighth-grade class is 3/8. Since the two events are independent of each other, we can multiply the probabilities to find the probability of selecting a girl from both grades.

So, the probability of selecting a girl from the seventh grade AND a girl from the eighth grade is (6/8) * (3/8) = 18/64 = 9/32.

Therefore, the probability that the teacher selects two girls is 9/32.

need help for this problem
plz thxs

Answers

30/35 = 6/7

8/40 = 1/5

15/20 = 3/4

This would help :))

If you multiply/divide the numerator and denominator of a fraction by the same number, you will get an equivalent fraction.

For the first one, 6 is in the new numerator. Let's divide this by the original numerator to see what they did.

30/6 = 5

So they divided the numerator by 5. To get an equivalent fraction, we must do the same to the denominator.

35/5 = 7

So our new equivalent fraction is 6/7.

For the second one, the new denominator is 5. Let's see what they did to get this.

40/5 = 8

So they divided the denominator by 8 to get 5, let's do the same to the numerator:

8/8=1

So we have 1/5.

For the last one, they have 4 in the new denominator. Let's see what they did to get this denominator:

20/4 = 5

So they divided the denominator by 5, let's do the same thing to the numerator:

15/5 = 3

So we have 3/4.

Please show work, if not it’s ok. I️ just need the answer.

Answers

the answer is d
hope this helps

What is the unit rate of x=y/7

Answers

7x=y, because you first multiply y by 7 so you then have to do the same to x, so that gives you 7x=y

A number cube is rolled and a random chip is pulled from a bag of 6 different color chips. The number cube is labeled 1 to 6. There is one blue chip in the bag. What is the probability of the number cube landing on an even number and a blue chip being drawn? Enter your answer as a fraction in simplest form in the box.

Answers

Probability of number cube landing on an even number AND a blue chip being drawn is 1/12

Answer:

The probability of an even number being drawn is 1/3 because the cube is numbered 1-6. The even numbers 1-6 are 2,4, and 6.

The probability of it landing on a blue is 1/6. Since there are six different colored chips and one is blue that means there is a 1/6 chance that a blue to be drawn.

Together, the probability of a number cube landing on an even number AND a blue chip being drawn is 1/12.

Step-by-step explanation:

Have a great rest of your day
#TheWizzer

What is the base 10 representation of the number 1100110

Answers

The answer is B) 102

Answer:

102

Step-by-step explanation:

Jessie saves $6 each week.In how many weeks will she have saved at least $50

Answers

The answer is (8 weeks) hope it helps and have a great day

8 and 3 days, 50/6 is 8.3, therefore, it would be 8 weeks and around Thursday. you just have to divide 50 by 6 and basically round. So it would be right in the middle of week 8

John walks 1 mile west. Then he turns north and walks another 2 miles before he stops to rest. How far is John from his starting point when he stops to rest? Round your answer to the nearest tenth.

Answers

You might think at first that he is 3 miles from his starting point, but if you think about it, that's not true. This forms a right triangle with one side of 2, the other side with 1, and the unknown distance as the hypotenuse. We can use Pythagorean's Theorem to solve this:
[tex]a^2 + b^2 = c^2[/tex]
[tex]c = \sqrt{a^2+b^2} = \sqrt{2^2+1^2} = \sqrt{5} [/tex]

This cannot be simplified anymore, so the distance John travels is [tex] \sqrt{5}[/tex] miles. You can put this into a calculator to get a value of 2.2 miles (rounding to the nearest tenth).

2. A researcher collected data about the favorite car color of a particular population. He asked 250 people about their favorite vehicle color and the survey revealed the following: 32% of people said blue, 24% of people said white, 20% of people said red, 18% of people said black, and 4% of people said silver.
(a) How many people said their favorite vehicle color was red? Explain.
(b) How many more people said their favorite vehicle color was blue compared to those who said white? Explain.
(c) How many people said their favorite vehicle color was either black or silver? Explain.
Answer:

Answers

A) 55 people said their favorite vehicle color is red

B) 80 people said their favorite vehicle color was blue while 60 people said their favorite vehicle color was white

C) 45 said their favorite vehicle color was black while 10 people said their favorite vehicle color was silver

Answer:

(a) 55 (b) 80 and 60 (c) 45 and 10

Step-by-step explanation:

Welcome :)

Aaron wants to divide the trail mix equally into 6 bags to give to his friends.How much trail mix will be in each bag?

Answers

1 is the answer because if you divided 6 by 6 you get 1

Wouldn't you divide each ingredient by 6?

Blake bought a 16-ounce soda. He uses a scale and makes four measurements of the can's contents. Which measurement is the most accurate, assuming that the can contains exactly 16 ounces? A)16.02 ounces B)16.022 ounces C)16.0222 ounces D)16.1 ounces

Answers

The correct answer is A)16.02
good luck

The stem-and-leaf plot lists the number of times different families visit the local zoo each year.

How many families visit the zoo at least 25 times, but fewer than 44 times each year?

Enter your answer in the box.

Answers

Hey there!

The answer should be 4

Hope this helps you!

Always remember, you are a Work Of Art!
- Nicole <3 :)

Answer:

Step-by-step explanation:

its 4 just do 4 just do it like nike

a worker is tiling the floor of a rectangular room that is 12 feet by 15 feet. THe tiles are square with side lengths 1 1/3 feet. How many tiles are needed to cover the entire floor?

Answers

area of room: 12 x 15 = 180 square feet
area of 1 tile = 1 1/3 x 1 1/3 = 1.78 square feet
round to 1.8

180 / 1.8 = 100 tiles are needed

Answer:

102 tiles needed to cover the entire floor.

Step-by-step explanation:

Given : A worker is tiling the floor of a rectangular room that is 12 feet by 15 feet. The tiles are square with side lengths [tex]1\frac{1}{3}[/tex] feet.

To find : How many tiles are needed to cover the entire floor?

Solution :

A rectangular room that is 12 feet by 15 feet.

The area of the room is [tex]A=L\times B[/tex]

[tex]A_r=15\times 12[/tex]

[tex]A_r=180\ ft^2[/tex]

The tiles are square with side lengths [tex]1\frac{1}{3}=\frac{4}{3}[/tex] feet.

The area of the tile is [tex]A_t=s^2[/tex]

[tex]A_t=(\frac{4}{3})^2[/tex]

[tex]A_t=\frac{16}{9}\ ft^2[/tex]

Number of tiles needed to cover the entire floor is

[tex]n=\frac{A_r}{A_t}[/tex]

[tex]n=\frac{180}{\frac{16}{9}}[/tex]

[tex]n=\frac{180\times 9}{16}[/tex]

[tex]n=101.25[/tex]

Therefore, Approximately 102 tiles needed to cover the entire floor.

A bookcase is to have four shelves, including the top. The height of the bookcase is to be 2 feet more than the width and only 20 feet of lumber is available. Use an equation to determine the width and height of the bookcase.

Answers

4(x+2)+2x=206x+8=206x=12x=2 feet
The height of the bookcase is x=2
The width of the bookcase is x+2=2+24 feet
Height and width are 2 feet, 4 feet

Answer:

Height and width are 2 feet, 4 feet

Step-by-step explanation:

The graph shows the number of hours driving and the distance from home: A scatter plot is shown with the title Road Trip. The x-axis is labeled hours driving, and the y-axis is labeled distance from home. Data points are located at 1 and 50, 2 and 125, 3 and 165, 4 and 250, 5 and 300. A line is drawn connecting the coordinate point 1 and 50 to 4 and 250. Which statement best describes the relationship between the number of hours driving and the distance from home? As the hours driving increases, the distance from home decreases. As the hours driving increases, the distance from home increases. As the hours driving decreases, the distance from home increases. No relationship can be determined.

Answers

Answer:

Step-by-step explanation:

The association is positive linear so that means everything is increasing as the line goes up.

Answer:

As the hours increases the number of distance decreases

Step-by-step explanation:

COMMON KNOWLEDGE?

Which of these is a symptom of nicotine?

A) Slowed heartbeat
B) Decreased blood pressure
C) Increase oxygen supply to the brain
D) Increase dizziness

Answers

The answer might be B because one addiction to nicotine is smoking, anxiety, and irritability.

A known symptom of nicotine is that it leads to a person having B. Decreased blood pressure

Nicotine is available in cigarettes and is responsible for the addiction that people feel to cigarettes. It has various health effects such as:

Causing loss of appetite Increasing one's risk of brain damage and heart attacks.

As a result of it causing a loss of appetite, the person will lose weight and will be unable to produce much blood which would lead to reduced blood pressure.

In conclusion, nicotine can lead to decreased blood pressure.

Find out more at https://brainly.com/question/11174442.

Find the area of a regular pentagon whose apothem is 25.1 mm and perimeter is 182 mm.

Answers

Divide the pentagon into 5 triangles each with an outermost side length of 182/5 or 36.4. You can also know that the height of all these triangles will be the length of the aphorism or 25.1 mm so you can find the area of one triangle using A=1/2 bh, that gives you 456.82, then multiply this by your 5 as to include all 5 triangles in the pentagon which gives you 2284.1 mm^2. I hope it helps

a cell phone company has a basic monthly plan of $40plus $0.45 for many minutes ised over 700. John was charged a total of $48.10. Write an equation to determine how many minutes he must have used during the month.

Answers

Cost of month plan = $40

Cost of minutes used = $0.45 after 700 minutes

Total cost = $48.10

Let x be the total minutes used
Total cost = 40 + 0.45(x - 700)

------------------------------------------------------------------
Form the equation and solve x
------------------------------------------------------------------
40 + 0.45(x - 700) = 48.10
40 + 0.45x - 315 = 48.10
0.45x - 275 = 48.10
0.45x = 48.10 + 275
0.45x = 323.10
x = 323.10 ÷ 0.45
x = 718

------------------------------------------------------------------
Answer: John had used 718 mins this month
------------------------------------------------------------------

What is the time the minutes are 10 more than 20 the hour is the same as4+4+4

Answers

The time is 12:30!!!(10+20=30,4+4+4=12)

10+20=30 (minutes) 4+4+4=12 (hour), so 12:30

Write the equation of a cosine function with the following properties

Answers

★ Analytical Trigonometry ★

Let it's general format be -
[tex]f(x) = a \: cos \: b(x - c) + d \\ [/tex]
Having frequency as -
[tex]f = \frac{b}{2\pi} [/tex]
According to provided data -

amplitude : 3
Hence , a = 3

[tex]frequency = \frac{1}{2\pi} [/tex]
Hence b = 1

Phase Shift to the left of 2 : c = -2 [ left to the y-axis ]

Midline of y = 4

Hence d = 4

Now finally substituting every value obtained -

The equation of Cos function is -

[tex]y = 3cos1(x - 2) + 4[/tex]

What’s the height of the brace

Answers

Hello. I found a different answer as to what the previous user got. I’ll show you my work and you can determine which one is right.

When you see two triangles, you can guess we’re going to deal with proportions. I’m going to set up a proportion between the long side of the big triangle and the long side of the little triangle

15/7

Ok...we’re making progress. We can make another proportion with height h and the “height” of the big triangle, 9

9/h

Since both of these are proportions, we can set them equal to each other

(9/h) = (15/7)

Cross multiply...

63 = 15h

h = 4.2 ft

Hye Sun has a modern coffee table whose top is a triangle with the following side legngths: 8 feet , 3 feet, and 5 feet. Is Hye Sun's coffee table top a tight triangle?

Answers

8 feet is the longest side so it would be the hypotenuse. Use the Pythagorean formula to check.
a^2 + b^2 = c^2
3^2+5^2 = 8^2
9 + 25 = 64
34 = 64
This is obviously not true si it is not a right triangle.

What is the volume of a shoe box with length 13 inches, width 7 inches, and height 5 inches? V = lwh in3

Answers

The volume is 13*7*5. Therefore, the answer is 455 in^3

A shoe box is in the shape of cuboid.

The formula to find volume of cuboid is given by:

Volume of a cuboid = (length × breadth × height) cubic units.

We are given:

length = 13 inches

width = 7 inches and

height = 5 inches.

Plugging these values in the formula of volume,

Volume of cuboid = L * W * H = 13 *7 *5 = 455 cubic inches.

Answer : The volume of shoe box is 455 cubic inches.

What is the equation of a line that is parallel to x=7/5x+6 and that passes through the point (2,-6)

Answers

the answer is below
we're given
[tex]y = \frac{7}{5} x + 6[/tex]
we need to convert to point slope form with our slope and point given
point slope form is
[tex] y - y1 = m(x - x1)[/tex]
so we fill in slope and our point

[tex]y + 6 = \frac{7}{5} (x - 2)[/tex]
we simplify the left side and get
[tex]y + 6 = \frac{7}{5} x - \frac{14}{5} [/tex]
then we subtract 6 from the left and get
this as our final answer
[tex]y = \frac{7}{5} x - \frac{44}{5} [/tex]

Other Questions

What food is named after the famous saint who's popular in Galicia? you have 3 bolts that are 3/8, 5/16 and 5/8 long. Which is the shortest? Tom made a stock and it's simmering the bones and the mirepoix of his stock a second time Tom is creating what someone answer please thank you so much No s calcular mi presupuesto. Estoy ________ dinero en cosas que no valen la pena. ahorrando ganando gastando pagando Match the water cycle element in column 1 with the characteristic in column 2.Potential Matches:1 : Falling to Earth2 : Rising from plants3 : Becoming solid4 : Forming dropletsAnswer___ : Precipitation___ : Transpiration___ : Condensation___ : Deposition, What is always true of a weak acid ? 1. If you want to know whether a company had a profit or a loss during a specific period of time, which financial statement would be most helpful? (1 point)statement of owners' equitycash flow statementbalance sheetincome statement2. What is the opportunity cost of an investment? (1 point)the combined values of the other opportunities availablethe value of the next most valuable opportunitythe marginal benefit of the investmentthe volatility of the investment3. The costs of running a business are called ___________. (1 point)startup costscash flowoperating ex HELP PLEASE !!! WILL MEDALRead this excerpt from Abraham Lincoln's Gettysburg Address and then answer the question that follows:(1) Four score and seven years ago, our fathers brought forth upon this continent a new nation: conceived in liberty, and dedicated to the proposition that all men are created equal.Now we are engaged in a great civil war ... testing whether that nation, or any nation so conceived and so dedicated ... can long endure. We are met on a great battlefield of that war.(2) We have come to dedicate a portion of that field as a final resting place for those who here gave their lives that this nation might live. It is altogether fitting and proper that we should do this. But, in a larger sense, we cannot dedicate ... we cannot consecrate ... we cannot hallow this ground. The brave men, living and dead, who struggled here have consecrated it, far above our poor power to add or detract. The world will little note, nor long remember, what we say here, but it can never forget what they did here.What is the main purpose of the second paragraph of this speech? To state the author's demands for amends To demonstrate the importance of the situation To provide a possible solution for the future To state the outcome of the war the speaker expects Frida Kahlo has a stormy marriage to the artist If you have exactly 2.00 moles each, of two different substances, then which of the following must be true about the two samples? They have the same mass. They have the same weight. They have the same number of particles. Both b and c. I will give 15 points to help me. which of these would be the correct answer there can be more than one.Identify the benefits of trade during the Hellenistic era:a) increased the power of monarchies b) created a standard language c) led to new ideas and inventions d) helped spread diseases e) spread the ideas of democracy f) caused people to discriminate against lower classes The Central Powers included (5 points) Germany, Austria-Hungary, and Russia Germany, Austria-Hungary, and the Ottoman Empire France, Great Britain, and Italy France, Great Britain, and Russia 50 POINTS AND BRAINLIEST! :) :) :)Write an equation that you can use to solve for x.Enter your answer in the box. Summarize the main characteristics of the Gandhara school of thought. Item 6 Find the amount of time. I=$30, P=$500, r=3% The amount of time is years. Which tax bracket a person Falls into is determined by his or her ?A. Salary B. Taxable income C. AGI D.Gross income Solve for x X^2+10+12=36X=-12 or x=2X How does a monetary policy of low interest rates affect consumers? What is Confucianism?A- It is a confusing system of governmentB- It is a form of religion that focuses on human morality C- It is the basis of the education system throughout Asia D- It is complex military arrangement in the sentence all completed applications should be submitted to the human resources department the verb be is. a. intransitive. b. transitive. c. linking. d. helping