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Varvara68 [4.7K]
2 years ago
15

What is a decimal that is equivalent to the expression (2 x 100) + (8 x 10) + (5 x 1) + (6 x 0.01) + (3 x 0.001).

Mathematics
1 answer:
Lana71 [14]2 years ago
5 0

Answer:

285.061

Step-by-step explanation:

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You deposit $800 in an account that earns simple interest at an annual rate of 5%.
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Step-by-step explanation:

$800 × 5% = $40

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x

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A Galapagos cactus finch population increases by half every decade. The number of finches is
Angelina_Jolie [31]

Answer:

The number of fringes at d=-2 is given as 20.

Step-by-step explanation:

Question

A Galapagos cactus finch population increases by half every decade. The number of finches is modeled by the expression

,

where d is the number of decades after the population was measured. Evaluate the expression for d = −2

Given :

The number of  finches is modeled by the expression  :

⇒ 45\cdot1.5^d

where d is the number of decades after the population was measured.

To evaluate the expression for d=-2

Solution:

In order to evaluate the given expression to find the number of finches at d=-2, we will plugin -2 for d in the expression and simplify it.

Plugging in d=-2 in the expression:

⇒ 45\cdot 1.5^{-2}

Using negative exponent property. [a^{-x}=\frac{1}{a^x}

⇒ 45\cdot \frac{1}{1.5^2}

⇒ 45\cdot \frac{1}{2.25}

⇒ 20   (Answer)

Thus, the number of fringes at d=-2 is given as 20.

This means the number of fringes two decades ago was 20.

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Answer:

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Step-by-step explanation:

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