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marysya [2.9K]
3 years ago
15

Calc Help Please!!! Urgent!!

Mathematics
1 answer:
tatyana61 [14]3 years ago
5 0

The derivative is just the slope.  So it's constant negative for the line up to x=-3.  Then we have a parabola that will go linearly from a positive slope to zero at the origin to a negative slope at x=3.  Then a constant positive slope.

So we're looking for flat negative line up to x=-3, linear starting positive and through the origin ending negative at x=3, then a flat positive.

Answer: third choice


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A normal distribution curve, where x = 70 and σ = 15, was created by a teacher using her students’ grades. What information abou
alexira [117]

The <em><u>correct answer</u></em> is:

We can conclude that 68% of the scores were between 55 and 85; 95% of the scores were between 40 and 100; and 99.7% of the scores were between 25 and 100.

Explanation:

The empirical rule tells us that in a normal curve, 68% of data lie within 1 standard deviation of the mean; 95% of data lie within 2 standard deviations of the mean; and 99.7% of data lie within 3 standard deviations of the mean.

The mean is 70 and the standard deviation is 15. This means 1 standard deviation below the mean is 70-15 = 55 and one standard deviation above the mean is 70+15 = 85. 68% of data will fall between these two scores.

2 standard deviations below the mean is 70-15(2) = 40 and two standard deviations above the mean is 70+15(2) = 100. 95% of data will fall between these two scores.

3 standard deviations below the mean is 70-15(3) = 25 and three standard deviations above the mean is 70+15(3) = 115. However, a student cannot score above 100%; this means 99.7% of data fall between 25 and 100.

4 0
3 years ago
Read 2 more answers
What is the simplified form of 162
SashulF [63]

Answer:

9 √ 2

Step-by-step explanation:

1. Rewrite  162 as 9^{2}    ⋅2  

2.  factor 81 out of 162

          \sqrt{81 (2)}

3.  Rewrite 81 as 9^{2}

          \sqrt{9^{2}.2 }

4. Pull the terms from under the radical

          \sqrt[9]{2}

I hope this helps :)

5 0
3 years ago
Is negative 1 4/5 greater than negative 1 7/10
Yakvenalex [24]

Answer:

no

Step-by-step explanation:

1 4/5 = 1 8/5 if you make a common denominator

3 0
2 years ago
How can I make these a single fraction?
Serga [27]

in the like term you can add directly and make it single fraction and in unlike term you have to take LCM of denominator .

6 0
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Points A and B have opposite x-coordinates but the same y-coordinates.
n200080 [17]

Answer:

c

Step-by-step explanation:

start before a and count until you get to B

5 0
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