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
AVprozaik [17]
3 years ago
7

A shirt is on sale for 40% off. The sale price is $12. What was the original price? What was the amount of the discount?

Mathematics
1 answer:
kolbaska11 [484]3 years ago
8 0

x = original price, or 100%

we know then that it original costs "x", which is the 100%, however is discounted by 40%, so the discounted price is really then 100% - 40% = 60%, and we know that that 60% is $12.

if 60% of the original price is $12, what is "x", the 100%?

\bf \begin{array}{ccll} amount&\%\\ \cline{1-2} x&100\\ 12&60 \end{array}\implies \cfrac{x}{12}=\cfrac{100}{60}\implies \cfrac{x}{12}=\cfrac{5}{3}\implies 3x=60 \\\\\\ x=\cfrac{60}{3}\implies x=20 ~\hfill \stackrel{\textit{amount of the discount}}{20-12\implies 8}\\ ~\hspace{34em}

You might be interested in
Use the regression line for the data in the scatterplot to answer the question. On average, how many more goals will a player sc
kari74 [83]

Answer:

A. 1/2 of a goal

Step-by-step explanation:

Hello!

Given the options:

A. 1/2 of a goal

B. 3/4of a goal

C. 1 goal

D. 4/3 goals

In a linear regression analysis the interpretation of the slope is:

> The modification of the average of Y when X increases one unit.

Given the variables

Y: Goals scored in the tournament.

X: Hours of training.

To calculate the slope, you have to use the y-intercept and choose two pairs of (Y;X) values that correspond to a value on the line, for example (1;1.5) and (2;1.5).

You can calculate the slope as b= ΔY/ΔX

b= \frac{Y_2-Y_1}{X_2-X_1}= \frac{1.5-1}{1-0} = \frac{0.5}{1}= \frac{1}{2}

1st value (X₁;Y₁)= (0;1)

2nd value (X₂Y₂)= (1;1.5)

So the average goals a player scores for every additional hour of practice is 1/2.

I hope this helps!

4 0
3 years ago
Read 2 more answers
The phone company Ringular has a monthly cellular plan where a customer pays a flat monthly fee and then a certain amount of mon
ivanzaharov [21]

Answer:

The slope is $0.35/min and it gives the cost per minute of the phone used.

Step-by-step explanation:

We can model this situation with a linear equation of the form

y =mx+b

where y is monthly cost, x is the number of minutes, b is the flat monthly fee, and m is the slope of the equation, or in our case, the amount of money charged per minute.

The slope m is

m= \dfrac{\$372.5-\$131}{990min-300min}

m = \$0.35/min,

in other words, the phone company charges $0.5 per minute.

With the slope in hand, the linear equation becomes

y =0.35x+b,

and we can find the monthly fee b from that fact that for 300 minutes the cost is $131:

\$131 = 0.35(300min) +b

b = \%26.

Therefore,

y = 0.35x+26

where the slope if the equation give the cost per minute of the phone used.

4 0
3 years ago
The Sum Of 3 Consecutive integers is 138, What Are The Integers?
puteri [66]

If the integers were all the same, then each one would be 1/3 of 138 = 46 .

They're not all the same, but they're consecutive, so you can find them easily.
Just start with your 3 copies of 46, take ' 1' away from one copy, and add it
to another one. You haven't changed their sum. You just made one of your
copies 1 less than 46, and you made another one of them 1 more than 46. 
Now you have 45, 46, and 47, and that sure looks like an answer to me.
Isn't that easy ... you only had to use some brain instead of a lot of messy
algebra.  That's what 'Brainly' might be all about, I guess.


3 0
3 years ago
Read 2 more answers
What integer represents you getting $200 from the bank
Klio2033 [76]

Answer:

positive 200 or +200

Step-by-step explanation:

6 0
2 years ago
The circular bases of the traditional teepees of the Sioux and Cheyenne tribes have a diameter of about 15 ft. What is the area
natta225 [31]
The answer may be C hope helped
5 0
3 years ago
Other questions:
  • Phoebe runs at 12km/h and walks at 5km/h. One afternoon she ran and walked a total of 17km. If she ran for the same length of ti
    15·1 answer
  • Y= 5x-13 find x and y intercepts
    5·1 answer
  • Which is a y- intercept of the graphed function?
    15·2 answers
  • Can someone help me with this math problem, I will be offering a large amount of points and whoever answers correctly will be ma
    13·2 answers
  • The amount of grazing land available for each cow varies inversely with the
    9·1 answer
  • An if then statement is written in the form "If p, then q." The phrase represented by p is called the _____. A. conclusion B. co
    15·2 answers
  • A measure of three angles of a triangle is shown below. What is the measurement of x? Record your answer in the gridable below.
    10·1 answer
  • What is the value of <br><img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B%20%7B3%3F%7D%5E%7B2%3F%7D%20%7D%7B3%20%7B%7D%5E%7B4%3F%
    6·1 answer
  • Select all of the correct solutions for the following equation
    13·1 answer
  • Sarai earns $380 per week for the 40 hours she works plus $20 commission on
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!