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
monitta
3 years ago
15

During a black Friday sale, Alberto paid 158.00 for a cell phone that was reduced by 30%. What was the original price of the sma

rt phone? Please explain how to do this.
Mathematics
1 answer:
mixer [17]3 years ago
3 0
The only way to think about this is that the $158 Alberto paid is 70% of the original price.  If you save 30% you pay 70%  (30% + 70% =  100%)

I will put that into math language

$158 = 70% of n   or $158 = .7n  Solve by dividing both sides of the equation by .7
(note that when you divide by a decimal less than 1, the answer will be larger than the starting number - $158 - which is exactly what we want.
To the nearest penny the cost of the phone is $225.71

Many people will try to find 30% of $158 and add it onto $158 but that will not work because the 30% came off the unknown price you are looking for and not the $158. You can't find 30% of a price you don't know. You must talk about it in terms of what you a paying - reread the first thing I wrote at the top of this page.  You can try the wrong way yourself (finding 30% and adding it on)  and when you check it, it won't work.

You might be interested in
Hey can someone please help me solve system of equations I’m failing can y’all help me pleaseee
Kazeer [188]
Cashier job pays $9 per hour
Delivering newspaper pays $8 per hour

3 0
3 years ago
Find the area of the rectangle.
Marianna [84]

Answer:

B

Step-by-step explanation:

= (7x+1) • (8x)

= 56x^2 + 8x

8 0
1 year ago
Plz help me I’ll make brainliest
arlik [135]

Answer:

m=4 because 2 times 4 is 8 and n= 8 because 2 times 8 is 16

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
The radius of a circle is 13miles. what is the area of a sector bounded by a 20 degree arc
Stolb23 [73]

Answer:

Area of the sector = 29.48 square miles.

Step-by-step explanation:

Given:

Radius of a circle = 13 miles

Angle bounded by the arc = 20 deg

To find

Area of the sector bounded by 20 degrees.

Note: Area of a sector = \frac{(\theta)}{360}\times \pi\times r^2

Plugging the values in the equation.

⇒ \frac{(\theta)}{360}\times \pi\times r^2

⇒ (\frac{20}{360})\times  3.14\times 13^2

⇒ 29.48 square-miles

So the area of the sector bounded by 20 degree arc is 29.48 square miles.

5 0
3 years ago
Sketch the graph of y+2=1/2(x-3)
valentina_108 [34]

Answer:

Step-by-step explanation:

y= 1/2x + −7/2

5 0
2 years ago
Other questions:
  • Triangle ABC has 2 known sides. A = 7, b = 5. Angle C = 24.63. What is the value of side c, correct to one decimal place?
    12·1 answer
  • Q: A family's vacation destination is 850 miles from their home. They travel by car 6 hours on the first day of their trip. Thei
    7·1 answer
  • How to solve this additional mathematics question ?
    8·1 answer
  • Can someone help meeee ASAP. For 10 points
    13·1 answer
  • What is -2+4n/5=6<br> I really need help
    11·1 answer
  • Round your answers to one decimal place, if necessary.
    14·1 answer
  • A 5 inch × 7 inch photograph is placed inside a picture frame. Both the length and width of the frame are 2x inches larger than
    13·2 answers
  • Help! Pls I cant solve it help me with explanation also pls.
    6·1 answer
  • If a father is twice as lod as his son and also 29 years older than his son. what is the age of the father?
    10·1 answer
  • A carpenter’s sketch of a room does not include a scale. She measures a wall that has been built and finds that it is 38.5 ft. l
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!