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Vlada [557]
3 years ago
9

Help me with these questions

Mathematics
1 answer:
egoroff_w [7]3 years ago
5 0
For number 6 it's 30 x 45
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Sea un cuadrado de 2 pulgadas de lado uniendo los puntos medios se obtiene otro cuadrado inscrito en el anterior si repetimos es
Ne4ueva [31]

Answer:

1) La serie geométrica formada es

4, 2, 1,..., ∞

2) La suma al infinito de las áreas de los cuadrados es 8 in.²

Step-by-step explanation:

1) El área del primer cuadrado, a₁ = 2² = 4 pulgadas²

El área del siguiente cuadrado, a₂ = (√ (1² + 1²)) ² = (√2) ² = 2 pulg²

El área del siguiente cuadrado, a₃ = ((√ (2) / 2) ² + (√ (2) / 2) ²) = 1 pulg²

Por lo tanto, la razón común, r = a₂ / a₁ = 2/4 = a₃ / a₂ = 1/2

Las áreas de los cuadrados progresivos forman una progresión geométrica como sigue;

4, 4×(1/2), 4 ×(1/2)²,...,4×(1/2)^{\infty}

De donde obtenemos la serie geométrica formada de la siguiente manera;

4, 2, 1,..., ∞

2) La suma de 'n' términos de una progresión geométrica hasta el infinito para -1 <r <1 se da como sigue;

S_{\infty} = \dfrac{a}{1 - r}

Por lo tanto, la suma de las áreas de los cuadrados hasta el infinito se obtiene sustituyendo los valores de 'a' y 'r' en la ecuación anterior de la siguiente manera;

La \ suma \ al \ infinito \ del \ cuadrado \ S_{\infty}  = \dfrac{4 \ in.^2}{1 - \dfrac{1}{2} } = \dfrac{4 \ in.^2}{\left(\dfrac{1}{2} \right)} = 2 \times 4 \ in.^2= 8 \ in.^2

La suma al infinito de las áreas de los cuadrados, S_{\infty} = 8 in.²

7 0
3 years ago
Simplify 6^7/6^5<br><br> I have no idea math is hard
MrMuchimi

Step-by-step explanation:

hi hlo hshsvbzbzbsbbzbsbsbsb

8 0
3 years ago
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Which of these 3-dimensional shapes is composed of only square faces?
elena-14-01-66 [18.8K]

Answer:

d.Cube

Step-by-step explanation:

The correct answer is cube, a cube is made up of 6 squares

7 0
3 years ago
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How many solutions does the system of equations have?
Zarrin [17]

Answer:

We need to see the system of equations.

Step-by-step explanation:

Show us the system of equations.

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What is the density of the marble?
irga5000 [103]
The answer I think is D. 
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