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3 years ago

Evaluate the sum of the finite geometric series. 1+2+4+8+...+128

1 answer:

7 0

S = a*((1 - r^(n+1))/(1-r)) S = 1*((1 - 2^(7+1))/(1-2)) S = 1*((1 - 2^8)/(1-2)) S = 1*((1 - 256)/(1-2)) S = 1*((-255)/(-1)) S = 255 So 1+2+4+8+...+128 = 255

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yarga [219]

Answer:

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Step-by-step explanation:

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3 years ago

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Makovka662 [10]

Answer:

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Step-by-step explanation:

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The sum of two consecutive integers is -239 find the two integers

xenn [34]

Answer:

The two consecutive integers are -119 and -120

Step-by-step explanation:

As we know that these two integers are consecutive, that means that they will have a difference of 1. This means that we can find the two integers by adding 1 to the sum of -239 and then dividing it by two

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4 years ago

Can someone please help me on this one?

diamong [38]

Add the three angles and set them to 180
4x-13+15+x+18=180
5x+20=180
5x=160
x=32

Then plug in to get A and C
A=4*32-13
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C=32+18
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4 0

3 years ago

What is the area of a rectangle if one side has a length of 12x^3 and

mojhsa [17]

Answer:

The area of this rectangle is 72x^5

Step-by-step explanation:

A = l ∙ w

Let, l = length

Let, w = width

Step 1: Substitute the length and width for the two given values

1. A = (12x³)(6x²)

Step 2: Multiply

1. A = 72x^5

3 0

2 years ago