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makkiz [27]
4 years ago
6

Need help to solve the maximum

Mathematics
1 answer:
Mekhanik [1.2K]4 years ago
6 0

Answer:

B. 1

Step-by-step explanation:

Your answer for A is correct.

The time it take for the sub to hit the water will be the time between when the submarine started to get lowered and when its distance from the water was zero.

The sub started to get lowered at x = 0.

Now we need to solve for the smallest positive zero of the function.

This function factors to (x - 1)(x - 7)

From this we can tell that the submarine is a water level for time x = 1 and x = 7.

The smallest of these is 1, so that is when the submarine first hit the water and 7 is when it came back out.

The sub started getting lowered at x = 0 and hit the water at x = 1 and because x is in seconds, it took 1 second for the sub to hit the water.

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Blizzard [7]
X = 7/2 and 9 there you go hun
4 0
3 years ago
If the CIRCUMFERENCE of a circle is 163.28, what is the AREA of the circle?
vovangra [49]

Answer:

20,939.00 ft²

Step-by-step explanation:

To solve this you first need to find the radius of the circle.

Circumference (C) = (2)radius (r)

163.28=2r

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Area of a circle (A) = πr²

A=π(81.64)²

A=π(6665.0896)

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This can be simplified to 20,939.00 ft²

6 0
3 years ago
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Nastasia [14]
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3 years ago
The number of wins for a high school football team is measured for the season. When the team plays at home, it is generally beli
Georgia [21]

Answer: The scatter plot would closely resemble a straight line with a positive slope. The data has a strong, positive correlation, but causation cannot be determined.

Step-by-step explanation:

As we know that the correlation coefficient(r) tells about the direction and the strength of the correlation but nothing about the causation.

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Given , Comparing the location of the game and the number of wins, a correlation coefficient of 0.891 is calculated.

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Also, 0.891 lies between 0.7 and 1 , it means it indicates a strong correlation between the location of the game and the number of wins.

Hence, the correct summarized statement about the football team winning at home would be :

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6 0
3 years ago
Read 2 more answers
Simplify: x^2+6x-16/x^2-4
natulia [17]
Factor both top and bottom.
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So x-2 terms cancel.
You’re left with...
x+8/x+2 (2nd answer)
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3 years ago
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