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
Schach [20]
2 years ago
14

A shirt purchased for $20. The store owner will sell it for a 40% mark up. What will the new price be?

Mathematics
2 answers:
ElenaW [278]2 years ago
7 0

Answer:

$28

Step-by-step explanation:

So we know the shirt is $20, and the owner is raising the price by 40%. That means we are adding $20 to 40% of the cost of the shirt

$20 + 40%

So we have to figure out how much 40% of $20 is. To do that, you can use fraction or decimal type

40% is the same thing as 40/100 or 0.4.  So you will multiply either of them by $20 to find how much 40% of $20 is.

40/100 * 20 = 8

0.4 * 20 = 8

Now we know that 40% of $20 is $8. So now we will add 8$ to $20

20 + 8 = 28

The new price will be $28

Kazeer [188]2 years ago
3 0
40%=0.4

0.4(20)
8(markup)

Shirt price=$20+ $8


New price=$28
You might be interested in
A local baseball team is struggling this season, and many fans of the team believe it may be time to replace the head coach. To
kolezko [41]

The statement third, “This is voluntary response bias. The result overestimates true support for firing the coach” is correct.

<h3>What is a survey?</h3>

A survey is a means of gathering information from a sample of people using pertinent questions with the goal of understanding populations as a whole.

We have:

A local baseball team is struggling this season, and many fans of the team believe it may be time to replace the head coach.

Number of votes V(n) = 2367

After the value of V(n) 79% of those who responded felt the coach should be fired.

Based on the data given, we can say this is referred to as voluntary response bias. The outcome exaggerates the level of support for firing the coach.

Thus, the statement third “This is voluntary response bias. The result overestimates true support for firing the coach” is correct.

Learn more about the survey here:

brainly.com/question/17373064

#SPJ1

4 0
2 years ago
Suppose the probability that a softball player gets a hit in any single at-bat is 0.300. Assuming that her chance of getting a h
Ksivusya [100]

Answer:

P(X=4)=(1-0.3)^{4-1} 0.3 = 0.103

The probability that she will not get a hit until her fourth time at bat in a game is 0.103

Step-by-step explanation:

Previous concepts

The geometric distribution represents "the number of failures before you get a success in a series of Bernoulli trials. This discrete probability distribution is represented by the probability density function:"

P(X=x)=(1-p)^{x-1} p

Let X the random variable that measures the number os trials until the first success, we know that X follows this distribution:

X\sim Geo (1-p)

Solution to the problem

For this case we want this probability

P(X=4)

And using the probability mass function we got:

P(X=4)=(1-0.3)^{4-1} 0.3 = 0.103

The probability that she will not get a hit until her fourth time at bat in a game is 0.103

4 0
3 years ago
An investigator thinks that people under the age of forty have vocabularies that are different than those of people over sixty y
Kay [80]

Answer:

t=\frac{(14-20)-0}{\sqrt{\frac{5^2}{31}+\frac{6^2}{31}}}}=-4.28  

Now we can calculate the p value with the following probability:

p_v =2*P(t_{60}  

The p value is a very low value so then we have enough evidence to reject the null hypothesis and we can conclude that people under the age of forty have vocabularies that are different than those of people over sixty years of age.

Step-by-step explanation:

Information given

\bar X_{1}=14 represent the mean for sample 1 (younger)

\bar X_{2}=20 represent the mean for sample 2 (older)  

s_{1}=5 represent the sample standard deviation for 1  

s_{f}=6 represent the sample standard deviation for 2  

n_{1}=31 sample size for the group 2  

n_{2}=31 sample size for the group 2  

t would represent the statistic

System of hypothesis

We want to test if  that people under the age of forty have vocabularies that are different than those of people over sixty years of age, the system of hypothesis are:

Null hypothesis:\mu_{1}-\mu_{2}=0  

Alternative hypothesis:\mu_{1} - \mu_{2}\neq 0  

The statistic is given by:

t=\frac{(\bar X_{1}-\bar X_{2})-\Delta}{\sqrt{\frac{\sigma^2_{1}}{n_{1}}+\frac{\sigma^2_{2}}{n_{2}}}} (1)  

And the degrees of freedom are given by df=n_1 +n_2 -2=31+31-2=60  

Replacing the info given we got:

t=\frac{(14-20)-0}{\sqrt{\frac{5^2}{31}+\frac{6^2}{31}}}}=-4.28  

Now we can calculate the p value with the following probability:

p_v =2*P(t_{60}  

The p value is a very low value so then we have enough evidence to reject the null hypothesis and we can conclude that people under the age of forty have vocabularies that are different than those of people over sixty years of age.

6 0
3 years ago
Please help me with this Math question...
kati45 [8]

Answer:

A) length = 9cm, width = 4 cm

Step-by-step explanation:

The key word "times" refers to multiplication, so if you're trying to find dimensions at 1/4 times its original size, you need to multiply the original dimensions by 1/4.

l = 36

new l = 36 (1/4)

          = 36/4

          = 9 cm

w = 16

new w = 16 (1/4)

            = 16/4

            = 4 cm

5 0
3 years ago
According to a survey done at your school, about 42% of all the female students participate in 2 sport seasons. You randomly ask
Leni [432]

Answer:

Hi Christine

Step-by-step explanation:

Ms. Paik would be mad, wouldn't she?

5 0
3 years ago
Other questions:
  • Assume that ∠A  is an acute angle. If sin A = 0.994, use a calculator to find the measure of ∠A to two decimal places.   The mea
    10·1 answer
  • A train is travelling from new orleans at a constant speed of 79 hours per hour. New Orleans and memphis are miles apart. How lo
    10·1 answer
  • Divide 24 into the ratio of 1:3?
    15·2 answers
  • Please help me out with this problem!
    6·1 answer
  • A number is multiplied by 5, and then 3 is subtracted from th product. the result is 12
    13·1 answer
  • Question 5 of 27<br> What is the measure of ZC in the parallelogram shown?
    12·1 answer
  • Please help me with my work and I’ll give brainlessly
    9·2 answers
  • To solve the equation<br><br> x + 7 =15<br><br> you would need to......
    12·1 answer
  • Answer this as soon as possible
    12·1 answer
  • During the first month on sale, the school store sold 186 shirts for $6.50 each. How much profit did the school make on these sh
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!