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LekaFEV [45]
3 years ago
15

Un rectangulo de madera se uso para en marcar un espejo en forma de rombo.Si los lados del marco miden 80.5 cm y 36.4, y las dia

gonales del rombo tienen las mismas medidas de dichos lados ¿cual es el area del espejo?
Mathematics
1 answer:
QveST [7]3 years ago
8 0

Answer:

1465.1 cm²

Step-by-step explanation:

El espejo en forma de diamante tiene la forma de rombo

Tenga en cuenta que: las diagonales del rombo tienen las mismas medidas de esos lados

Por lo tanto, el área del espejo se calcula como:

1/2 × Diagonal 1 × Diagonal 2

Diagonal 1 = 80.5 cm

Diagonal 2 = 36.4 cm

= 1/2 × 80.5 cm × 36.4 cm

= 2930.2 cm² / 2

= 1465.1 cm²

Por tanto, el área del espejo es 1465.1 cm².

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Answer: Girls: 20

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Step-by-step explanation: 40% of 50 is 20, which means there are 20 girls.

Subtract 50-20 to get the number of boys, which is 30.

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3 years ago
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8(2x + 3) = PxQ
anyanavicka [17]

Respuesta:

P = 16; Q = 24

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Explicación paso a paso:

Dada la relación:

8 (2x + 3) = Px + Q

Abra el soporte

16x + 24 = Px + Q

Los valores de P y Q para los que la ecuación tiene infinidad de solución:

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Valores de P y Q para los que la ecuación no tiene solución:

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5 0
3 years ago
2x + 3y = 53<br>3x - y = 19​
Keith_Richards [23]

Answer:

x = 10

y = 11

Step-by-step explanation:

Solve for x:

2x + 3y = 53

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9x - 3y = 57

Add:

2x = 53

9x = 57

11x = 110

Solve algebraically:

x = 110 ÷ 11

x = 10

Now solve for y:

2(10) + 3y = 53

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3y = 53 - 20

3y = 33

y = 33 ÷ 3

y = 11

Verify for the second equation:

3x - y = 19

3(10) - (11) = 19

30 - 11 = 19

30 = 19 + 11

30 = 30 (Correct)

Cheers!

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