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olga55 [171]
2 years ago
10

Rocío paga por un par de zapatos 94.50 soles sabiendo que es el precio y luego de los descuentos sucesivos de 10 %y 20% cuál es

el precio original de los zapatos
Mathematics
1 answer:
EleoNora [17]2 years ago
3 0

Responder:

$ 131.25

Explicación paso a paso:

Dado que :

Importe pagado tras sucesivos descuentos del 10% y 20%

Sea el costo original = x

Importe final tras ambos descuentos = 94,5

Primer descuento = (1 - 0.1) x = 0.9x

Segundo descuento: (1 - 0.2) de 0.9x = 0.8 de 0.9x = 94.5

Es decir ; 0,8 * 0,9x = 94,50

0,72x = 94,50

Dividir ambos lados por 0,72

0,72x / 0,72 = 94,50 / 0,72

x = 131,25

Por lo tanto, precio original = $ 131.25

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A worker at a snack stand opened a new box of cups. The first day he used 30 cups , the second day the worker used 15 percent of
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Answer:

Step-by-step explanation:

the first day he used 30 cups

the second day he used 15% of the remaining cups...a total of 90 cups were used on second day.

so 15%of the remaining cups = 90.....so if u let x be the total cups, then the remaining cups would be x - 30

15% of (x - 30) = 90.....turn ur percent to a decimal..." of " means multiply

0.15(x - 30) = 90

0.15x - 4.5 = 90

0.15x = 90 + 4.5

0.15x = 94.5

x = 94.5 / 0.15

x = 630 total cups <==

lets check..

start with 630 cups....used 30 the first day....leaving u with 600 cups....15% of the remaining cups = 90.....so 15% of 600 = 90....lets check it

15%of 600 = 0.15(600) = 90...yep, thats correct....there were 630 cups in the new un-opened box

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3 years ago
What happens to a figure that is dilated by a factor of ½ .
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Step-by-step explanation:

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2 years ago
A bag contains nine red balls, four green balls, and fifteen yellow balls. What is the probability of pulling out one red ball?
Aleksandr [31]

Answer:

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Did you type something in wrong?

Step-by-step explanation:

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lyudmila [28]

Answer:

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General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

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  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
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<u>Algebra I</u>

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<u>Pre-Calculus</u>

Circle Center Formula: (x - h)² + (y - k)² = r²

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Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify</em>

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