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Stels [109]
3 years ago
14

Which of the points listed is the same distance from the y-axis as the point (−4, 7.5)?

Mathematics
1 answer:
Lunna [17]3 years ago
4 0

Answer:

(-4, y) and (4, y), where y is any real number.

Step-by-step explanation:

The point (-4; 7.5) is 4 units from the y axis.

All points that lie on the line x = -4 and the line x = 4 have the same distance from the y-axis of 4 units.

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3/5 is the lowest term. 3/5 = 15/25. Does this help? 
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The surface area of A and B of the following cuboid are 35 cm" and 21
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The surface 5 cm, and the length is 10 cm
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Answer:

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3 years ago
A rancher plans to make 4 identical and adjacent rectangular pens against a barn (see figure below), each with an area of 100 m^
Tasya [4]

Answer:

10 by 10 meters

Step-by-step explanation:

In calculus terms, you can use the formula for the perimeter which is 2l + 2w, and the area l × w.

Then since the area is 100

l × w = 100. So w = 100/l

Then substitute this into the perimeter formula.

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Then take the derivative d/dx [take the derivative of a quantity with respect to x], by using a simpler method known as the power rule:

d/dx[x^n] = nx^n-1

so p = 2l + 200/l becomes p' = 2 - 200/l^2

Since the derivative of a constant is 0, to solve for l, set p' to 0

0 = 2 - 200/l^2 → -200/l^2 = -2 → 200/l^2 = 2 → 2l^2 = 200 → l^2 = 100 → l = √100, l = 10.

Now that we know the length is 10, We can substitute the length in the original equation to find the width.

l = 10 → w = 100/l → w = 100/10, w = 10.

Therefore the perimeter of each rectangular pen is 40, with a length of 10 and width of 10.

If you want to do this algebraicly, there are more steps involved

7 0
3 years ago
How many degrees does the minute hand turn to get from 12:00 to 12:05
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Well the angle is acute at the 3 it would be a right angle so I'm guessing it's 30 degrees but if I'm wrong u could use a protractor to find the angle of degrees
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3 years ago
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