1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Rzqust [24]
3 years ago
15

Based on the tree diagram below, what is the probability that a student doesn't have lice, given that the student tested negativ

e? Round your answer to the nearest tenth of a percent.
A. 97.6%
B. 99.4%
C. 96.4%
D. 98.6%
Mathematics
2 answers:
olga_2 [115]3 years ago
6 0

Answer: D

Step-by-step explanation:

apec

oee [108]3 years ago
3 0

Answer:

Option D (APEX)

Step-by-step explanation:

L= Student has lice

NL= Student has no lice

PT=Test Shows positive

NT=Test Shows negative

P(\frac{NT}{NL}) =0.7708 (Probability that a student has no lice and the test shows negative)

P(\frac{NT}{L}) = 0.0108 ( Probability that a student has lice and the test shows negative)

  1. P\frac{NT}{NL} = \frac{P\frac{NT}{NL} }{P\frac{NT}{NL} +P\frac{NT}{L} }
  2. \frac{0.7708}{0.7708+00108}
  3. \frac{0.7708}{0.7816}
  4. 0.98618219 (Simplify)

<u> Terms Of Percentages</u>

0.98618219 × 100

=98.6

Therefore your answer is 98.6% (Option D)

APEX

You might be interested in
Kristine buys a 4-ounce bar of baking chocolate for 3.76. What is the unit price per ounce?
mart [117]

Sorry took so long doing homework at the same time! lol

ok so, all you have to do is divide 3.76 by 4 to get unit $:

3.76/4= $0.94

Hope this helps!! :)

3 0
3 years ago
The diagram shows the back fences of three houses in a small neighborhood. The lengths of the fences are given.
Makovka662 [10]

Answer:

They are a Pythagorean triple that forms a right triangle

Step-by-step explanation:

a2 + b2 = c2

(5)^2 + (12)^2 = (13)^2

25 + 144 = 169

(13)^2 = 169

6 0
3 years ago
Read 2 more answers
You plan to invest $10,000 in two funds paying 4.5% and 5% simple interest. (There is more risk in the 5% fund.) Your goal is to
Artist 52 [7]

Answer:

$6000

Step-by-step explanation:

Given the following :

Total planned amount to invest = 10,000 in two funds:

Fund A at rates 4.5% and

Fund B at 5% simple interest

Total Annual Interest should be = 480

What is the smallest amount you can invest in the 5% fund and still meet your objective?

Let ;

Investment in fund A = principal = a at 4.5%(0.045)

Investment in fund B = principal = (10000 - a) at 5%(0.05)

Simple interest = principal * rate * time

a + (10000 - a) = 10000

(a * 0.045) + (10000 - a) * 0.05 = 480

0.045a + 500 - 0.05a = 480

-0.005a = 480 - 500

-0.005a = - 20

a = 20 / 0.005

a = 4000

4000 at 4.5%

Investment in fund B = principal = (10000 - a)

(10,000 - 4000) = 6000

6 0
4 years ago
Will Keith and Tameka ever be on the same page on the same day? Explain.
masya89 [10]

Answer:

yes, on day 15 and page 90

Step-by-step explanation:

this is a system of equations: y = 6x and y =5x + 15

5 0
3 years ago
What is the radius of a circle with a central angle of 4π7 radians that intercepts an arc of length 12π in.?
Snezhnost [94]
\frac{4 \pi}{7}R=12 \pi \\ \\ \Rightarrow R =  \frac{12 \pi \times 7}{4 \pi} \\ \\ \Rightarrow \boxed{ R = 21\ in}
8 0
4 years ago
Other questions:
  • What is the point of intersection when the system of equations below is graphed on the coordinate plane? -x+y=4 6x+y=-3
    7·2 answers
  • A grocery store sold 125 gallons of milk and 80 boxes of cereal for a total of $610 the next day they sold 90 gallons of milk an
    9·1 answer
  • To calculate approximately the amount or value of something is called _________.
    8·1 answer
  • Find the cube of each number
    5·1 answer
  • A + 7 as a verbal phrase
    9·1 answer
  • Solve -3(2x - 9) = -3.
    6·1 answer
  • 3 feet<br><br> 12 feet<br><br> The ramp will be approximately<br><br> feet long
    14·1 answer
  • I don’t know what to do here. If someone help me would be great!
    11·1 answer
  • I really need help please?
    9·2 answers
  • Drag and drop an answer to each box to correctly explain the derivation of the formula for the volume of a pyramid.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!