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
Vedmedyk [2.9K]
2 years ago
8

A store offers a discount of $2.25 on each sweater that originally cost $19.55. What is the total cost of 3 sweaters with the di

scount?
Mathematics
1 answer:
DENIUS [597]2 years ago
5 0

Answer:

51.90

Step-by-step explanation:

the answer is 51.90

hope this helped!!!

You might be interested in
In a clinical study, volunteers are tested for a gene that has been found to increase the risk for a disease. The probability th
MrRa [10]

Answer:

a) 0.984

b) 20 people

Step-by-step explanation:

a)

If The probability that a person carries the gene is 0.1, then in a sample of 20 people, 2 should carry the gene.

Now, we want to know how many samples there are with this property.

Since we have 20 elements where 18 are alike (do not carry the gene) and 2 are alike (carry the gene), we have to compute the number of permutations of 20 elements in which 18 are alike and 2 are alike. This number is

\frac{20!}{18!2!}=190

In this 190 20-tuples there are only 3 where the 2 carriers of the gene are in the first 3 places, namely

(1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0)

(1,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0)

(0,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0)

where 1=carries the gene, 0=does not carry the gene.

So there are 190-3 = 187 elements in which the first 3 elements have no 2 carriers, hence the probability that 4 or more people will have to be tested until 2 of them with the gene are detected is 187/190 = 0.984 (98.4%) rounded to three decimal places.

b)

Given that the probability that a person carries the gene is 0.1, then in a sample of 20 people, 20*0.1 = 2 should carry the gene.

4 0
3 years ago
Tom bought 7 new baseball trading cards to add to his collection the next day his dog ate half of his collection. There are now
Ede4ka [16]

Answer: 83 cards

Step-by-step explanation:

38 x 2 + 7 = 83

6 0
2 years ago
<img src="https://tex.z-dn.net/?f=y%20%3D%20%20%5Cfrac%7B1%7D%7B2%7D%20%20%2B%20%20%5Cfrac%7Bw%7D%7B3%7D%20" id="TexFormula1" ti
ElenaW [278]

Answer:  \bold{w=\dfrac{6y-3}{2}}

<u>Step-by-step explanation:</u>

Isolate w by performing the following steps

  • Multiply by 6 on both sides to clear the denominator
  • Subtract 3 from both sides
  • Divide both sides by 2

y=\dfrac{1}{2}+\dfrac{w}{3}\\\\\\6\bigg[y=\dfrac{1}{2}+\dfrac{w}{3}\bigg]\quad \implies \quad 6y=3+2w\\\\\\6y-3=3-3+2w\quad \implies \quad 6y-3=2w\\\\\\\dfrac{6y-3}{2}=\dfrac{2w}{2}\quad \implies \quad \large\boxed{\dfrac{6y-3}{2}=w}

5 0
3 years ago
Hot air balloon travels 18 miles in 3 hour. At this rate how many miles will the hot air balloon travel in 3/4 hour?
seropon [69]
You can figure out how many miles per hour it travels by dividing 18/3. This gives us the answer of 6. 3/4 = 0.75 so we can multiply 6 * 0.75 to get 4.5 as our final answer. It will travel 4.5 miles in 3/4 of an hour.
5 0
2 years ago
Which of the following is the definition of a rational number? a number that can be written as a nonterminating or nonrepeating
Mazyrski [523]
The answer is <span>a number that can be written as a ratio of two integers. 

I hope this helps!</span>
7 0
3 years ago
Other questions:
  • How do you solve this equation <br> 9/4 Divided by -3/4?<br> Anything will help <br> Thanks ^w^
    8·2 answers
  • Need help with a math question
    7·1 answer
  • Question 13
    9·1 answer
  • Suppose Mr. Pink is 28 years old right now and puts away $1,800 per quarter in an account that returns 6% interest. a.) How much
    14·1 answer
  • Is x^2-3x-23 polynomial
    9·1 answer
  • The length of an Airbus A300 aeroplane is 54 m.
    12·1 answer
  • Can I get some help with this one please
    12·1 answer
  • The local humane society is trying to determine how many racoons there are in a city. They catch and tag 18 raccoons. Later on,
    7·1 answer
  • A greater number than -8​
    8·1 answer
  • What is the surface area of the shape DUE AT 10:15 AM
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!