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a_sh-v [17]
2 years ago
8

Write each decimal as a percent. 3. 0.35. 4. 0.812

Mathematics
2 answers:
ruslelena [56]2 years ago
5 0

Answer:

30%.34  81%.02

Step-by-step explanation:

Olenka [21]2 years ago
4 0

Answer:

3.=300%

0.35=35%

4.=400%

0.812=81.2%

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The amount of the radioactive substance is 374.6 g

<h3>How to determine the amount of radioactive substance?</h3>

The given parameters are:

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The amount of the radioactive substance is calculated as:

A(t) = a(1 - r)^t

This gives

A(t) = 424 * (1 - 6%)^t

At 2 hours, we have:

A(2) = 424 * (1 - 6%)^2

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What is the value of x in the figure?<br><br> Enter your answer in the box.
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3 years ago
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Y=-2x²-8x-5 domain and range
Jobisdone [24]

Answer:

Domain: All real numbers

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Step-by-step explanation:

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This is a polynomial function.

The domain is set of all values of x, that makes this function defined.

Since polynomial functions are defined everywhere, the domain is all real numbers.

To find the range we put the function in vertex form:

y =  - 2( {x}^{2}  + 4x) - 5

y =  - 2( {x}^{2}  + 4x + 4) - 5 +  - 4 \times  - 2

y =  - 2( {x}  + 2)^{2} - 5 + 8

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erica [24]

Answer:

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Step-by-step explanation:

Given,

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