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natima [27]
3 years ago
12

A show owner offers a 20% discount off the regular price of a mirror. The amount of the discount is $3 what is the regular price

?(need now)
Mathematics
1 answer:
hram777 [196]3 years ago
5 0

Answer:

$15

Step-by-step explanation:

The original price of the mirror is unknown, so let's call it x.

The discount on the original price is a 20% discount, so it is 20% of x, or 0.2x.

We are told the discount is $3, so 0.2x = 3. Now we solve the equation for x.

0.2x = 3

Divide both sides by 0.2.

x = 3/0.2

x = 15

The regular price is $15.

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Two pages that face each other in a book have 421 as the sum of their page numbers. What is the number of the page that comes fi
nordsb [41]

Answer:the pages will come on the first is  210

Explanation:

Since we have given that two pages that face each other in a book

i.e. they must be consecutive to each other

so, let the first page number be x

and the second page number be x+1

According to question,

x+x+1=421\\2x+1=421

2x=421 -1

2x=420

x=\frac{420}{2}\\=210

So, the pages will come on the first is  210

4 0
3 years ago
\ Which center of a triangle is also the center of gravity of the triangle? orthocenter centroid incenter circumcenter
Citrus2011 [14]
That is the centroid.

The point where the lines from each vertex of the triangle  to the midpoints of the opposite sides intersect.
3 0
3 years ago
The sides of the parallelogram are 63cm and 76cm. if they intersect at an angle of 63 degrees, find the area of the parallelogra
S_A_V [24]
Area =  ab Sin O
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3 0
3 years ago
Set up and solve the following using dimensional analysis.
Softa [21]
1).  Multiply (5400 inches) by (1 foot / 12 inch) then by (1 mile / 5280 foot).

      (See explanation at the bottom)

         =      (5400 inch) x (1 foot / 12 inch) x (1 mile / 5280 foot)

         =      (5400 x 1 x 1 / 12 x 5280)  (inch - foot - mile / inch - foot) 

         =          0.0852  mile  


2).  Multiply (16 week) by (7 day/week) then by (24 hour/day)
       then by (60 minute/hour) then by (60 sec/minute).

3).  Multiply (54 yards) by (3 foot/yard) then by (1 meter/3.28 foot)
       and then by (1000 mm/meter)

4).  Multiply (36 cm/second) by (3600 second/hour) then by (1 meter/100 cm)
      then by (1 mile/1609.3 meter).

5).  Look up how many grams in a pound  ('P')
       Look up how many mL in a gallon       ('G')

      Multiply (1.09 g/mL) by ( 1 pound/ P gram) then by (1 gallon/ G mL)

6).  Multiply (32 foot/sec) by (1 meter / 3.28 foot) then by (60 sec/minute).


Each time I told you to multiply by something, it was always a fraction
where the numerator and denominator are equal, like (60 seconds/minute)
or (1 foot / 12 inch).  Since the top and bottom of the fraction are equal, the
value of the fraction is ' 1 ' , and multiplying by it doesn't change the value,
it only changes the units ... that's what this whole exercise is about.
When you multiply, KEEP the units in the product, and then, after you multiply, you can 'cancel' units out of the top and bottom of the product.
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4 0
3 years ago
You spend 1/5 of your income on car payment. You spend 3/8 of the remainder of your income on rent. What fraction of income is s
kenny6666 [7]

Answer:

3/10

Step-by-step explanation:

1/5 of <u>total</u> income - spent on car

<u>remainder</u><u> </u> income = 4/5

3/8 of <u>remainder</u><u> </u>= 3/8 ×4/5 = 3/10(of total income spent on rent)

the word "<u>of</u>" means you can find it by multiplication

e.g. 2 of 1/2 means 2 × 1/2 which is 1

5 0
3 years ago
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