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Vlad1618 [11]
3 years ago
9

Devaughn's age is three times Sydney's age. The sum of their ages is 52. What is Sydney's age?

Mathematics
2 answers:
Alborosie3 years ago
8 0

Answer:

Sydney is 13 and Devaughn is 39

Step-by-step explanation:

13x3=39

39+13=52

Phantasy [73]3 years ago
3 0

Answer:

Sydney is 13 and Devaughn is 39

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Dada una ecuación de la forma

<h3>y = A sin(B(x + C)) + D</h3>

Tenemos que:

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  • el periodo es 2π/B
  • el desfase es C (a la izquierda es positivo)
  • el desplazamiento vertical es D

Sabemos que:

f(x)=1+6Sen(2x+π/3)

Y podemos reescribirla como:

f(x)=6Sen(2(x+π/6))+1

Siendo:

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  • C = π/6 → Desfase
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La imagen de una función trigonométrica de esta forma es:

y ∈ [-A+D,A+D]

y ∈ [-6+1, 6+1]

y ∈ [-5,7]

La gráfica se adjunta.

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3 years ago
6. A tank contains 100-gallon of pure water. At time t = 0, a solution containing 2 lb of salt per gallon flows into the tank at
SOVA2 [1]

Answer:

The answer is below

Step-by-step explanation:

Let Q represent the amount of salt in the tank at time t.

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Integrating:\\\\A(100-t)^{-4}=-2(100-t)^{-3}+c\\\\A=-2(100-t)+\frac{c}{(100-t)^{-4}} \\\\at, t=0,A=0\\\\0=-2(100-0)+\frac{c}{(100-0)^{-4}}\\\\c=0.02\\\\A=-2(100-t)+\frac{0.02}{(100-t)^{-4}}

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skelet666 [1.2K]
2/3x + 7 = x-7
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Hope this helps! :)


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