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dedylja [7]
3 years ago
14

A shoe store employee needs to decide how many shoes to put on display. The store manager wants the number of sneakers on displa

y to be at least two more than the number of soccer cleats on display. The store employee represents this restriction as y ≥ 2 + x, where x is the number of soccer cleats, and y is the number of sneakers on display.
Which of the following ordered pairs represents viable solutions in terms of the context?
(15, 18.5)
(14, 12)
(–1, 3)
(10, 12)
Mathematics
2 answers:
mart [117]3 years ago
7 0
4,10 and 10,12 sorry if I’m wrong...
Archy [21]3 years ago
4 0

Answer:


Step-by-step explanation:

Given that a shoe store employee needs to decide how many shoes to put on display. The store manager wants the number of sneakers on display to be at least two more than the number of soccer cleats on display. The store employee represents this restriction as

y ≥ 2 + x, where x is the number of soccer cleats, and y is the number of sneakers on display.  

WE have to find the viable points out of following:


(15, 18.5)   :  Not Viable since though 18.5 ≥ 2 + 15, no of sneakers cannot be in decimal.

(14, 12)  : Not Viable since  12 < 2 + 14.

(–1, 3) : Not Viable since  no of shoes cannot be in negative.

(10, 12) : viable since [tex]12 ≥ 2 + 10/tex]


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Encontrar la Esperanza Matemática y Desviación Estándar del número de imperfecciones (y) en pizarra acrílica. (2 puntos) y 0 1 2
fredd [130]

Responder:

1,625; 0.8569

Explicación paso a paso:

y ___0 ____ 1 ____ 2 ____3

P (y) _1 / 8 ___ ¼ ___ ½ ____ 1/8

Valor esperado (E (x)): Σx * p (x)

= (0 * (1/8)) + (1 * (1/4)) + (2 * (1/2)) + (3 * (1/8)) = 1,625

La desviación estándar = sqrt (Var (x))

Var (X) = Σx²p (x) * E (x) ²

Var (X) = [(0 ^ 2 * (1/8)) + (1 ^ 2 * (1/4)) + (2 ^ 2 * (1/2)) + (3 ^ 2 * (1 / 8))] - 1.625²

Var (X) = (0 * (1/8)) + (1 * (1/4)) + (4 * (1/2)) + (9 * (1/8)) - 1.625 ^ 2

= 3.375 - 2.640625

= 0,734375

Desviación estándar = Sqrt (0,734375) = 0,8569

7 0
3 years ago
Aaron and Maria collected shells one morning at the beach. Maria had 3 times as many as Aaron, but they would have had the same
Hoochie [10]
Let the amount of shells collected by Aaron be x and the amount of shells collected by Maria be y respectively. Then the following system of equations should be solved:
\left \{ {{3x=y} \atop {x+8=y-6}} \right.

First of all, express y out of first equation:
y=3x

Then, replace y in second equation with found expression and solve it:
x+8=3x-6
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x=14/2=7

Finally, replace x in first equation with found value and solve it too:
3*7=y
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So, Aaron has found 7 shells while Maria has found 21.


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8 0
3 years ago
Plez halp with question bc im smol brain
Studentka2010 [4]

Answer:

B. y= 2x–15

Step-by-step explanation:

The equation that represents the line that passes through the points (8, 1) and (10,5) is y= 2x–15

"x" is found on the left hand side of the bracket and "y" is found on the right hand side of the bracket :)

(8, 1) and (10, 5)

x in the first bracket is 8 and x in the second bracket is 10.

y in the first bracket is 1 and y in the second bracket is 5.

When this equation is applied to find the value for y we get:

y= 2x-15

y= 2(8)-15

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y= 1

y= 2x-15

y= 2(10)-15

y= 20-15

y= 5

We got back the values of y and this means that the equation was correctly chosen and the answer is correct :)

6 0
3 years ago
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