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Vaselesa [24]
3 years ago
14

Maria necesita un par de zapatos de tacon para un evento de gala y ya vio tres pares que le gustaron mucho cada uno cuesta $500,

$580 y $620. Por ahora tiene $200 ahorrados y tiene un empleo donde gana $50.50 la hora. ¿Cuantas horas debe trabajar para podet pagar cualquiera de los pares de zapatos?
Mathematics
1 answer:
Art [367]3 years ago
8 0

Answer:

Mária debe trabajar mínimo 9 horas si quisiera tener la cantidad para pagar cualquiera de los pares de zapatos.

Step-by-step explanation:

Tenemos que calcular la cantidad de horas que tiene que trabajar María para alcanzar la cantidad de dinero necesaria para comprar alguno de los pares. La cantidad de dinero que Mária gana por trabajar x horas es 50.50*x. La cantidad total de dinero que tiene María está dada por 200+50.50*x (se le suma la cantidad que tiene ahorrada). Luego, basta con que esta cantidad sea mayor o igual al precio de cada par de zapatos.

Para hacerlo de manera más general, considerando unos zapatos que cuestan y, tenemos la siguiente inecuación

200+50.5x \geq y

Restando 200 a ambos lados y dividiendo por 50.5 obtenemos que

x \geq \frac{y-200}{50.5}

Basta reemplazar y por el valor de cada par de zapatos, para obtener su x correspondiente.

Si y = 500, entonces x \geq 5.94. Es decir, debe trabajar mínimo 6 horas.

Si y = 580 entoncesx \geq 7.52. Es decir, debe trabajar mínimo 8 horas

si y = 620 entoncesx\geq 8.31. Es decir, debe trabajar mínimo 9 horas.

Es decir que si quisiera tener la cantidad para pagar cualquiera de los pares, debe trabajar mínimo 9 horas.

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In a survey four out of every five people prefer creamy more then crunchy peanut butter. If there are 120 people at the grocery
JulsSmile [24]

Answer:

150

Step-by-step explanation:

set up a equation-

4/5=120/x

x= people buying peanut butter.

120/4=30

30 x 5=150

3 0
3 years ago
David has 75 arcade tokens each arcade game at dave and busters costs 5 tokens which inequality matches this scenario
lys-0071 [83]

Answer:

≤

Step-by-step explanation:

Note that

> means greater than

< means less than

≥ means greater than or equal to

≤ less than or equal to

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7 0
3 years ago
the difference between two numbers is 4. three times the smaller number is equal to two times the larger less two. find the numb
Nataliya [291]

The two numbers are 6 and 10

<em><u>Solution:</u></em>

Let "x" be the smaller number

Let "y" be the larger number

Given that difference between two numbers is 4

larger number - smaller number = 4

y - x = 4 ----- eqn 1

Also given that three times the smaller number is equal to two times the larger less two

three times smaller number = 2 times larger number less two

3x = 2y - 2 ---- eqn 2

From eqn 1,

y = 4 + x --- eqn 3

Substitute eqn 3 in eqn 2

3x = 2(4 + x) - 2

3x = 8 + 2x - 2

x = 6

From eqn 3,

y = 4 + 6 = 10

Thus the two numbers are 6 and 10

3 0
3 years ago
fias goal was to raise $5000 to help protect the manatees.She raised $3500.What percent of her goal did she achieve?
Fed [463]

Hello from MrBillDoesMath!

Answer:  70%

Discussion:

    Goal = 5000

    Amount raised = 3500

    Percent of goal reached = ( 3500/5000) * 100 =

                                                 0.7 * 100 = 70

 

Thank you,

MrB

8 0
3 years ago
Read 2 more answers
The sum of 2 numbers is 21 the second number is 6Xthe first number work out the two numbers.
igomit [66]

21 = x + 6x

Solve that in order to answer your problem.

8 0
3 years ago
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