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KengaRu [80]
4 years ago
10

3. A diagram of Izzi's bedroom is shown below. What is the area of her room? (14-7) 7 ft 8 ft 5 ft 10 ft

Mathematics
1 answer:
kow [346]4 years ago
3 0
The answer is 2800 if it not then IDK
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Area=πr^2 * β/360
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the function below represents the number of zombies, N, where t is the number of years since the zombies gained control of earth
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There is missing information about this question that I found online.
Given function is:
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The question is:
<span>Is this exponential growth or decay? Explain using your understanding of the properties of exponents.
</span>This is an exponential decay. 
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5 0
4 years ago
Read 2 more answers
describe and correct the error a student made in finding the interval(s) over which the function is positive and negative
liraira [26]

Answer:

The interval over which the function is positive is (-1 , 3)

The interval over which the function is negative is (-∞ , -1)∪(3 , ∞)

Step-by-step explanation:

* Lets explain the meaning of The intervals of positive and negative

 values of a function

- Interval of positive values means the values of x when the values

 of y are positive

- Y is positive means the graph is above the x-axis

- Interval of negative values means the values of x when the values

 of y are negative

- Y is negative means the graph is below the x-axis

- <u><em>Remember</em></u> that the value of y on the x-axis is zero, then the points

 of intersection between the graph and x-axis have zero value of y

 and zero is not positive nor negative, then the x-coordinate of

 these points do not belong to the intervals of positive or negative

* <em>Lets solve the problem</em>

∵ The graph represents a downward parabola

∵ The positive value of the parabola is above the x-axis

∵ The parabola intersects the x-axis at -1 , 3

∴ Y is positive at ⇒ -1 < x < 3

# -1 , 3 ∉ to the interval

∴ The interval over which the function is positive is (-1 , 3)

∵ The negative value of the parabola is below the x-axis

∵ The parabola intersects the x-axis at -1 , 3

∴ Y is negative at ⇒ -∞ < x < -1 and 3 < x < ∞

# -1 , 3 ∉ to the interval

∴ The interval over which the function is negative is (-∞ , -1)∪(3 , ∞)

* <u><em>The error of the student he wrote Positive</em></u>: [-1 , 3] which means

  that -1 , 3 ∈ to the intervals over positive

  which the function is positive or negative

7 0
4 years ago
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