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Dahasolnce [82]
3 years ago
5

If y+1/y=5 then show that (y^3+1/y^3)=110

Mathematics
1 answer:
Mandarinka [93]3 years ago
4 0
See the picture below

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The value of a house decreases at a steady rate of 20% each year. What is the total percentage loss (to the nearest integer) in
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Answer: The total percentage loss would be 67%.

Step-by-step explanation:

Since we have given that

Rate of decline each year = 20%

Number of years = 5

We need to find the total percentage loss in value of the house at the end of 5 years.

So, Total percentage loss would be

1-(1-\dfrac{r}{100})^5\\\\=1-(1-\dfrac{20}{100})^5\\\\=1-(\dfrac{4}{5})^5\\\\=1-(0.8)^5\\\\=0.67\\\\\approx 67%

Hence, the total percentage loss would be 67%.

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2 years ago
Each of the four sets a1, a2, a3, and a4 contains four elements. the intersection of every i of these four sets (2 < i < 4
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3 years ago
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Dominik [7]

Step-by-step answer:

This is a regular heptagon, means it has 7 <em>congruent</em> sides and 7 <em>congruent </em>vertex angles.

To work with polygons, there is a very important piece of information that you must know to solve the majority of related problems.

This is:

sum of exterior angles of polygons = 360 degrees.

If you don't remember the 360 degrees, think of the sum of exterior angles of an equilateral triangle, which is 3*(180-60)=3*120=360!  It works!

For a regular heptagon, c = 360/7=51.43 degrees approx.

This means that each vertex angle measures

vertex angle = 180-c

So since 2d+the vertex angle = 360, we have

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solve for d:

2d=360-(180-c)=180+c

d=(180+c)/2=90+c/2=115.71 degrees. (approx.)

8 0
3 years ago
hi i need help once again lol A company asked its employees how much time they spend reading and responding to email. The line p
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Answer:

C

Step-by-step explanation:

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3 years ago
What is the value of x-y if x= -1/5 and y=7/15
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The answer to this problem is -0.66666
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3 years ago
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