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iragen [17]
3 years ago
12

A person who weighs 105 Kg plans to loose 9Kg during the first 3 months of a diet, 6Kg during the next 3 months, 4Kg during the

following 3 months and so on. this pattern of loss forms a geometric sequence.
Determine the total weigh the person can lose after a large number of years; assuming the diet is successful.
Mathematics
1 answer:
vodomira [7]3 years ago
5 0
If the diet is successful and continue losing weight that person will disappear
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A theater has 56 rows of seats. If there are 13 seats in the first row, 18 in the 2nd row, 23 in the 3rd row. How many seats are
Anna35 [415]

Answer:

8428

Step-by-step explanation:

According to the Question,

  • Given, A theater has 56 rows of seats. If there are 13 seats in the first row, 18 in the 2nd row, 23 in the 3rd row.

We have a number sequence  13, 18, 23, ...

  • We can say that this is an arithmetic sequence because of the common difference 'd', is equal to 5, and the first term 'a1' is equal to 13.
  • The formula for the sum of an arithmetic sequence with n terms is given is S_n= \frac{n}{2} [2a_1+(n-1)d]S .

Substitute the given values into the equation to solve for the sum of the 56 rows of seats.

S_56= \frac{56}{2}[2(13)+(56-1)(5)]\\S_{56}=28\left[26+275\right]\\S_{56}=28\left[301\right]\\S_{56}=8428

Therefore, there are 8428 seats in all.

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3 years ago
Your company offers two types of insurance plans:
kotegsom [21]

can I have brainliest if I answer

4 0
3 years ago
Help me please<br> Idk what to do
Ber [7]

Answer:

x=36

Step-by-step explanation:

First rewrite equation then multiply each side by 36. 9x-36=4x+144.

then move the variable 9x-4x+36=144. Next subtract 9x and 4x ...5x=144+36.... 5x=180. Lastly you divide 180÷5 this your answer x=36

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A cube has a volume of 64 cubic feet. The surface area of the cube is?
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Answer:

The surface area is A≈96ft²

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