Marcia is at a store with a 20% off sale. She also has a coupon for an additional 10% off the sale price.


Prove or disprove the following statement: A 20% discount on the original price of an item, followed by the use of a 10% off coupon, results in a total discount of 30%.

I wil brainly anyone who answers this right with explination

Answers

Answer 1

Answer:

False

Step-by-step explanation:

I will use an example here:

Original price of a pc is $799

you use your 20% off coupon which will bring it down:

799 decrease 20% =

799 × (1 - 20%) = 799 × (1 - 0.2) = 639.2

then you use your 10% off coupon:

639.2 decrease 10% =

639.2 × (1 - 10%) = 639.2 × (1 - 0.1) = 575.28

our final price doing them separately is $575.28

while doing it in one step by subtracting 30%:

799 decrease 30% =

799 × (1 - 30%) = 799 × (1 - 0.3) = 559.3

our price by doing it with a 30% discount is $559.30


Related Questions

Write an expression 12×4 in words

Answers

Answer:

12 times 4, or 12 multiply by 4

Ac= 5x+13 bd=11x-5 what is x?

Answers

Answer:

ohhhhhhhhhhhhhhhhh 8====> have a good day

Answer:

x=3

Step-by-step explanation:

Note: I'm not sure what "Ac" stand for but I am solving for your equation.

5) A book is sold at $152.50 and a discount of 9% is given for students.
Find the cost of the book.
13

Answers

Answer:

$138.78

Step-by-step explanation:

152.50 decrease 9% =

152.50 × (1 - 9%) = 152.50 × (1 - 0.09) = 138.775

5 x 2^x= 40 What is the value of x?

Answers

Answer:

x=3

Step-by-step explanation:

isolate the variable by dividing each side by factors that don't contain the variable

A cylinder is sliced horizontally, parallel
to its base, and vertically. Which of
the following could represent cross
sections of the cylinder?
Circle and triangle
Circle and rectangle
Circle and hexagon
Circle and sphere

Answers

Answer:

Rectangle

Step-by-step explanation:

In a pet shelter that is occupied by 55% dogs and 45% cats, 60% of the animals are brought in by concerned people who found these
animals in the streets. If 90% of the dogs are brought in by concerned people, what is the percent of cats that are brought in by
concerned people?

Answers

Answer:

4.5%

Step-by-step explanation:

90% of the pets brought in by concerned people are dogs.

This means that the remaining 10% of pets brought in by concerned people are cats.

10% of 55% of cats is 4.5%

in decimal form:

[tex].55[/tex] × [tex].10 = .045[/tex]

plz mark me brainliest. ;)

what is 4 divided by 3/4?

Answers

Answer:

16/3 or 5.33

Step-by-step explanation:

Cross multiply

4/1 * 3/4

4 * 4 = 16

3 * 1 = 3

Estimate 32.79 dived by 8.1

Answers

the answer to this problem is 4.

3/4r+2r+1/2



Plssss help and hurry thanks!

Answers

Answer:

3.25r

Step-by-step explanation:

Im converting them to decimals because its easier to write on brainly so 0.75r+2r+0.5r = 3.25r

Answer:

Answer is 11r/4 + 1/2

Step-by-step explanation:

3/4r + 2r + 1/2 = 11r/4 + 1/2

help i need help on this​

Answers

Answer:

27

Step-by-step explanation:

im almost possitive that that is right

Answer:

C. 27 [tex]cm^{2}[/tex]

Step-by-step explanation:

For this problem find the area for the three individual segment then add them together.

Step 1: Find area of the rectangle

formula for area of a rectangle: bxh

b-base

h-height

3x6=18

Step #2: Find area of the triangle

Formula for area of a triangle:[tex]\frac{1}{2} bxh[/tex]

b-base

h-height

[tex]\frac{1}{2} (3x3)[/tex]=1/2(9)=4.5

Step #3: Find the area of the triangles total

Because the two triangles have the same area you can just multiply the area of one of the triangles by 2

4.5x2=9

Step #4: Add all the areas together

rectangle+2 triangles

18+9=27

Find -1/9(-27) show your work

Answers

Answer:

-1/9(-27)=3

Step-by-step explanation:

that's my answer

Sonia saves
3
11 of her monthly income for retirement. If Sonia earned ​$2200 last​ month, how much did she save for​ retirement?

Answers

Answer:

Sonia saved 1889 from her last month's pay

Step-by-step explanation:

Sonia saved $594 for retirement

Two points are given from each of two lines L1 and L2. Without graphing the points, determine if the lines are perpendicular, Parallel, or neither.

Answers

Answer:

the lines are neither

Step-by-step explanation:

Item 1
Round 71.58043 to the nearest hundredth

Answers

Answer:

71.58

Step-by-step explanation:

Select all the ratios that are equivalent to 8 : 6. *

4:3
6 to 8
16:12
10:8
7 to 5

Answers

Answer:

4:3 and 16:12

Step-by-step explanation:

(25m + 22) + (9m) = ?​

Answers

Answer:

= 34m + 22

Step-by-step explanation:

  (25m + 22) + (9m)

= 25m + 9m + 22

= (25+9)m + 22

= 34m + 22

Jessica has an account with a credit union. Her account earns 2.6% simple interest yearly. Exactly a year and a half ago, she opened her account with $900.

How much interest has she earned so far?
A.
$35.10
B.
$2,340.00
C.
$46.80
D.
$28.08
pls someone help im very confused

Answers

Answer:

Good Luck!

Step-by-step explanation:

D

i just started taking a math class today and i'm really rusty. my question is
simplify 28-(6+4)=(4-2)

Answers

The answer to this question is 13.

#17. The height, H metres, of a certain species of Fir
tree can be estimated from the formula.
h= 35d , where d metres is the diameter at the
base. use the formula to determine the approximate
height of a fir tree with base diameter 3.2 m.

Answers

Answer:

The approximated height of the tree is of 112 meters.

Step-by-step explanation:

The height of a tree with a base diameter of d meters is approximated by the following formula:

[tex]h = 35d[/tex]

In this question:

Base diameter of 3.2m, so [tex]d = 3.2[/tex], and the height is in meters.

[tex]h = 35d = 35(3.2) = 112[/tex]

The approximated height of the tree is of 112 meters.

Answer:

The answer actually is 76m

Step-by-step explanation:

Please help me answer this!!!

Answers

Answer:

the process of being a differential is that the process of moving to the different people in a very good process of being the speaker of speaker and the senate speaker and the author organizes a different speech to the topic and i  

Step-by-step explanation:

the process is important as the speaker of speaker is the process of speech to a speech in speech speech and speech in speech and speech

A, B, and C are polynomials, where: A = 3x – 4 B = x + 7 C = x2 + 2 What is A2 – (B + C) in simplest form?
8x2 – 25x + 7
8x2– 25x + 11
10x2 – 25x + 7
10x2 – 25x + 11

Answers

Answer:

A.) 8x2 – 25x + 7

Step-by-step explanation:

The expression A² – (B + C) in its simplest form is 8x² – 25x + 7

Data obtained from the question A = 3x – 4B = x + 7C = x² + 2A² – (B + C) =?

How to express A² – (B + C) in its simplest form

A² – (B + C)

(3x – 4)² – (x + 7 + x² + 2)

9x² – 12x – 12x + 16 – (x + x² + 9)

9x² – 24x + 16 – x – x² – 9

9x² – x² – 24x – x + 16  – 9

8x² – 25x + 7

Thus,

A² – (B + C) = 8x² – 25x + 7

Learn more about quadratic equation:

https://brainly.com/question/12585213



PLZ HELP ITS DUE TONIGHT
Because two pairs of angles are congruent, the triangles are similar by
the (select)
QR=

Answers

AA Criterion.

QR is similar to BC

Hope it helps.

Hannah graphs a right triangle as shown, and then she applies the translation (x+2, y-4). What is the length of the horizontal base of the image?

Answers

Answer:

2 units

Step-by-step explanation:

Representing Solutions for Equations as Graphs (7.10b) . ... If a number is an integer, then it is also a rational number. 4. ... Now substitute the values for x and y into the expression. 2(1 ... You have seen how fractions, decimals, and integers can be used to solve ... a) The rise shown in this triangle is 4 units; the run is 2 units.

Which one? I’ll mark brainliest

Answers

the orbit of the moon the earth

What is the solution to the equation 3 square root x+4+3 square root 2x+8=0? x = –12 x = –4 x = 4 x = 12

Answers

Answer:

x=-4

Step-by-step explanation:

Please help!!
“ which of the following is equivalent to 4/9 “

Answers

The correct answer is A, because the bar over the 4 indicates that it is continuous.
Hope this helps The correct answer is a to this

Simplify the expression to a polynomial in standard form:

(3x+5)(2x^2+x+5)

Answers

Answer:

Hope this helps

Step-by-step explanation:

Answer:

[tex]6x^{3} + 13x^{2} + 20x +25[/tex]

Step-by-step explanation:

HELPPPPPPPPPPPPPPPPPP ​

Answers

9514 1404 393

Answer:

  (c)  No, it is not a rectangle because the diagonals are not congruent

Step-by-step explanation:

The diagonals of a rectangle bisect each other and are the same length. The lengths of the diagonals of this figure are ...

  AC = √((8-0)² +(6-2)²) = √(64+16) = 4√5

  BD = √((5-3)² +(2-6)²) = √(4 +16) = 2√5

The diagonals are different lengths, so the parallelogram is not a rectangle. This is described correctly in choice C:

  No, it is not a rectangle because the diagonals are not congruent.

_____

The lengths are found using the distance formula:

  d = √((x2 -x1)² +(y2 -y1)²)

It's C, the diagonals are not congruent (they aren't equal) and with rectangles they always have to be.

please help me please ​

Answers

Answer:

The 3rd one

Step-by-step explanation:

The people who live in chicago form a subset of those who rent apartments in chicago

Answers

If this is from the question that asks if the question makes sense then it’s

D. The statement does not make sense because the set of people who live in Chicago also includes home owners which are not part of the set of people who rent apartments in Chicago.
Hope this helps ✌️
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