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Sati [7]
3 years ago
5

Formula for the sum of an arithmetic progression​

Mathematics
1 answer:
otez555 [7]3 years ago
4 0

Answer:

I think it is S = n⁄2 (a + L)

Step-by-step explanation:

“S” is the sum of the arithmetic sequence, “a” as the first term, “d” the common difference between the terms, “n” is the total number of terms in the sequence and.

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There are $15$ gymnasts in the Olympic women's competition, including $4$ Americans. The gold medal goes to first place, silver
gulaghasi [49]

Answer:

There are 220 ways by which the medals can be awarded to three of the 15 gymnast, if exactly one of the Americans wins a medal

Step-by-step explanation:

From the question, we have;

The number of gymnast in the Olympic women's competition = 15

The number of the gymnast who are Americans = 4

The number of medals awarded = 3 medals

The number of ways hat the medals can be awarded to the three of the gymnast if exactly one of the Americans wins a medal is given as follows;

The number of ways one of the medals can be won by one of the four Americans = ₄C₁ = 4 ways

The number of ways the other two medals can be won by the remaining 11 gymnast = ₁₁C₂ = 55 ways

Therefore, the total number of ways, 'N', the medals can be awarded to three of the 15 gymnast, if exactly one of the Americans wins a medal is given as follows;

N = ₄C₁ × ₁₁C₂

∴ N = 4 × 55 = 220

3 0
3 years ago
Help plz<br> What is 35% of 600??
faust18 [17]

Answer:

W = 210

Step-by-step explanation:

What is 35% of 600

Is means equals and of means multiply

W = 35% *600

Changing the percent to a decimal

W = .35 *600

W = 210

5 0
3 years ago
Hulk left home and walked 8 blocks west. Then he turned and walked 6 blocks north. If each block is 500 ft. long, how far is Hul
son4ous [18]
The answer is 5000 ft 

His displacement is actually the hypotenuse (c) of the triangle with sides 6 blocks and 8 blocks.
According to the Pythagorean theoreme:
c² = a² + b²
c² = 6² + 8²
c² = 36 + 64
c² = 100
c = √100
c = 10 blocks

Since 1 block is 500ft long, then 10 blocks are 5000 ft long:
1 : 500ft = 10 : x
x = 10 * 500ft / 1 = 5000 ft
3 0
4 years ago
Evaluate: Four To The Third Power write the numerical answer only
Alja [10]
The answer is 4^3 and I believe that this is right
7 0
3 years ago
Which relation is a function?
Nadya [2.5K]

Answer:

it is c

Step-by-step explanation:

3 0
3 years ago
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