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MArishka [77]
3 years ago
8

Compute the requested value. Choose the correct answer.

Mathematics
2 answers:
Fiesta28 [93]3 years ago
7 0

Original price of the item = $14.95

Price after discount = $13.79

Discount offered = original price - price after discount = 14.95- 13.79 = $1.16

Now let us find the percentage of discount offered.

Percentage discount is given by the formula:

Percentage discount = \frac{MP-SP}{MP}*100

Where MP= Marked price= original price

SP= selling price= price after discount

Percentage discount = \frac{1.16}{14.95}*100

Percentage discount = 7.759 %

Alla [95]3 years ago
7 0
7.759%

1-\frac{13.79}{14.95}=0.0775919
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Kruka [31]
There would be 56 becasue you calculate the square root of 196 which is 14 and multiply by 4 
5 0
3 years ago
Find the perimeter of the given triangle
faltersainse [42]

ABC is similar to PQR

that means AC/PR is a constant = 12/ 6 = 2

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AB= 2PQ

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Perimeter of ABC= AB+BC+ CA=

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= 2( perimeter of triangle PQR )

Perimeter of ABC= 2( perimeter of PQR) = 2* 36 = 72

Answer : 72.

8 0
3 years ago
I need help solving x^2+3xy-y^2=12 and x^2-y^2=-12
Georgia [21]
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\frac{64}{y^2}=\frac{y^2-12}{1}\\\\y^2(y^2-12)=64\\\\y^4-12y^2-64=0\\\\substitute:y^2=t > 0\\\\t^2-12t-64=0

a=1;\ b=-12;\ c=-64\\\Delta=b^2-4ac\to\Delta=(-12)^2-4\cdot1\cdot(-64)=144+256=400\\\\t_1=\frac{-b-\sqrt\Delta}{2a};\ t_2=\frac{-b+\sqrt\Delta}{2a}\\\\\sqrt\Delta=\sqrt{400}=20\\\\t_1=\frac{12-20}{2\cdot1}=\frac{-8}{2}=-4 < 0;\ t_2=\frac{12+20}{2\cdot1}=\frac{32}{2}=16\\\\y^2=16\Rightarrow y=\pm\sqrt{16}\Rightarrow y=-4\ or\ y=4\\\\x=\frac{8}{-4}=-2\ or\ x=\frac{8}{4}=2\\\\Solution:x=-2\ and\ y=-4\ or\ x=2\ and\ y=4

3 0
3 years ago
4(x+7)=9(x-1)+22 solve for x
Mice21 [21]

Answer:

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First we will distribute the 4 into the (x+7) and 9 into (x-1).

You should then got

4x+28=9x-9+22

Afterwards we combine like-terms

4x+28=9x+13

Then, we put all the alike values on the same side together.

4x+28=9x+13

-4x           -4x

___________

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-13        -13

____________

15=5x

You then divide both sides by 5 to isolate x

15/5= 3

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3 0
2 years ago
Athan thinks all factors of even numbers are even. Is Rathan correct or incorrect?
larisa [96]

Answer

rathan is incorrect

Step-by-step explanation:

Factors of an even number are not always even. Even numbers don't have to HAVE  even factors  they just have to be divisible by 2

4 0
2 years ago
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