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gogolik [260]
3 years ago
5

What is the series in Expanded Form?

Mathematics
1 answer:
tangare [24]3 years ago
7 0

Answer:

∴ ∑₁⁸i = 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8

Step-by-step explanation:

Given:

To Find:

∑₁⁸i =?

Solution:

Σ   This symbol called Sigma means "summation up"

∴ ∑ n mean sum for all n

But if ∑₁³n means  Sum for n=1 , 2 ,and 3 ADD

∴ ∑₁³n = 1 + 2 + 3

∴ ∑₁⁸i = 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8

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Pls help is it a b or c <br> will give brainliest btw
Lelu [443]

Answer:

The answer is C. Annie didn't make a mistake.

Step-by-step explanation:

To get k, we subtract 7.5 from both sides of the equation.

10 - 7.5 equals 2.5.

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2 years ago
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In a film, an actor played an elderly uncle character is criticized for marrying a woman when he is 3 times her age. He wittily
yanalaym [24]

Answer:the uncle is 54 years old.

The woman is 18 years old

Step-by-step explanation:

Let x represent the age of the uncle.

Let y represent the age of the woman that he married.

In the film, an actor played an elderly uncle character is criticized for marrying a woman when he is 3 times her age. This means that

x = 3y

He wittily replies, "Ah, but in 18 years time I shall only be twice her age. It means that

x + 18 = 2(y + 18)

x + 18 = 2y + 36 - - - - - - - - - - 1

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3y + 18 = 2y + 36

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y = 18

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x = 54

6 0
3 years ago
State which of these expressions can be written as
omeli [17]
The answer is B y+y+y
4 0
3 years ago
Y=2x+ 5
Vlad1618 [11]

Answer:

The slope is the number with the varible next to it.

Step-by-step explanation:

1. 2x

2. 5x

3. 2/3x

4. x

5. x

5 0
2 years ago
What is the equation of the line that passes through the point (-6,7) and has a slope of -5? Write the equation in slope interce
V125BC [204]

Answer:

y = -5x - 23

Step-by-step explanation:

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rearrange:

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8 0
2 years ago
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