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
avanturin [10]
3 years ago
10

Suppose the diameter of a circle is 6 units. What is its circumference?

Mathematics
1 answer:
Basile [38]3 years ago
6 0
C=2•pi• R
D=6 then the radius is 3
2•Pi•3 =18.85
You might be interested in
A small school has 27 boys .if the ratio of boys to girls is 9:4, how many students are their together
Sauron [17]
9:4, so for every 9 boys there are 4 girls. 27 is 3 times 9, so multiply 4 with 3, you get 12. Count them up and BOOM, 39
4 0
3 years ago
Given the following system of equations, identify the type of system.
DanielleElmas [232]

Step-by-step explanation:

I think is b i hope this works

4 0
3 years ago
Read 2 more answers
A plane traveled 580 miles to Ankara and back. the trip there was with the wind. It took 5 hours. The trip back was into the win
Vlad1618 [11]
290 mph , its going half the speed as before. Hope this helps. 
3 0
3 years ago
A common blood test performed on pregnant women to screen for chromosome abnormalities in the fetus measures the human chorionic
goldfiish [28.3K]

Answer:

(a) The proportion of women who are tested, get a negative test result is 0.82.

(b) The proportion of women who get a positive test result are actually carrying a fetus with a chromosome abnormality is 0.20.

Step-by-step explanation:

The Bayes' theorem states that the conditional probability of an event <em>E</em>_{i}, of the sample space <em>S,</em> given that another event <em>A</em> has already occurred is:

P(E_{i}|A)=\frac{P(A|E_{i})P(E_{i})}{\sum\liits^{n}_{i=1}{P(A|E_{i})P(E_{i})}}

The law of total probability states that, if events <em>E</em>₁, <em>E</em>₂, <em>E</em>₃... are parts of a sample space then for any event <em>A</em>,

P(A)=\sum\limits^{n}_{i=1}{P(A|B_{i})P(B_{i})}

Denote the events as follows:

<em>X</em> = fetus have a chromosome abnormality.

<em>Y</em> = the test is positive

The information provided is:

P(X)=0.04\\P(Y|X)=0.90\\P(Y^{c}|X^{c})=0.85

Using the above the probabilities compute the remaining values as follows:

P(X^{c})=1-P(X)=1-0.04=0.96

P(Y^{c}|X)=1-P(Y|X)=1-0.90=0.10

P(Y|X^{c})=1-P(Y^{c}|X^{c})=1-0.85=0.15

(a)

Compute the probability of women who are tested negative as follows:

Use the law of total probability:

P(Y^{c})=P(Y^{c}|X)P(X)+P(Y^{c}|X^{c})P(X^{c})

          =(0.10\times 0.04)+(0.85\times 0.96)\\=0.004+0.816\\=0.82

Thus, the proportion of women who are tested, get a negative test result is 0.82.

(b)

Compute the value of P (X|Y) as follows:

Use the Bayes' theorem:

P(X|Y)=\frac{P(Y|X)P(X)}{P(Y|X)P(X)+P(Y|X^{c})P(X^{c})}

             =\frac{(0.90\times 0.04)}{(0.90\times 0.04)+(0.15\times 0.96)}

             =0.20

Thus, the proportion of women who get a positive test result are actually carrying a fetus with a chromosome abnormality is 0.20.

6 0
3 years ago
bernite is selling candy bars for a school fundraiser. the school paid $20 for a box of 15 king size candy bars and bernite sell
NikAS [45]
The school originally used $20 for the purchase of the candy.
Use the formula Y=2x to find how much money is made (y) from the number of candy bars (x)
Sub in the 15 bars for t
Y=2(15)
Y=30
Therefore the school made $10, because they earned an extra $10 in comparison to the amount they bought the candy bars for, which was $20.
Hope this helps!
6 0
3 years ago
Other questions:
  • In the 30-60-90 triangle below, side s has a length of__ and side q has a length of ___.
    12·1 answer
  • Please I need your help. Answer the questions following the grammar rules.
    8·2 answers
  • Ex 9 va rog mult <br> Dau 20 de puncte.
    5·1 answer
  • Order the numbers from least to greatest.
    7·2 answers
  • Caroline, Krutika and Natasha share some sweets in the ratio 4:3:3. Caroline gets 9 more sweets than Natasha. How many sweets do
    8·1 answer
  • Can someone please help me with math.
    14·2 answers
  • Find the value of the trigonometric ratio​
    8·2 answers
  • Which expression represents the product of x3+2x-1 and x4-x3+3?​
    13·2 answers
  • Can someone please help me on this
    11·2 answers
  • Megan purchased a used car for $6,200. Her state charges 6% tax for the car, $57 for registration, $60 for a new title certifica
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!