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ludmilkaskok [199]
3 years ago
7

Lucy has the spinner pictured and

Mathematics
2 answers:
mario62 [17]3 years ago
8 0

Answer:

d

Step-by-step explanation:

STALIN [3.7K]3 years ago
4 0
The answer is 1 out of 3 I think
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What is the sum of the geometric series
Sergio039 [100]
Answer: 2343 / 256

Explanation

I will do this for you in two forms: 1) adding each term, and 2) using the general formula for the sum of geometric series.

1) Adding the terms:

 4
∑ 3 (3/4)^i = 3 (3/4)^0 + 3 (3/4)^1 + 3 (3/4)^2 + 3 (3/4)^3 + 3 (3/4)^4
i=0

= 3 + 9/4 + 27/16 + 81/64 + 243/256 = [256*3 + 27*16 + 64*9 + 4*81 + 243] / 256 =

= 2343 / 256

2) Using the formula:

n-1
∑ A (r^i) = A [1 - r^(n) ] / [ 1 - r]
i=0

Here n - 1 = 4 => n = 5

r = 3/4

A = 3

Therefore the sum is 3 [ 1 - (3/4)^5 ] / [ 1 - (3/4) ] =

= 3 [ 1 - (3^5) / (4^5) ] / [ 1/4 ] = 3 { [ (4^5) - (3^5) ] / (4^5) } / {1/4} =

= (3 * 781) / (4^5) / (1/4) =  3 * 781 / (4^4) = 2343 / 256

So, no doubt, the answer is 2343 / 256
5 0
3 years ago
Which choices are equivalent to the expression below? Check all that apply.
Gre4nikov [31]

Answer:

A and E

Step-by-step explanation:

Sqrt 3 times sqrt 3 is sqrt 9, which simplified is 3

3 0
2 years ago
11. Sum of angle measures: 180°
shusha [124]

Answer:

given \: tha \: sum \: is = 180 \\ then \\ n + 4n + 40 = 180 \\ 5n + 40 = 180 \\ 5n = 180 - 40 \\ 5n = 140 \\ n =  \frac{140}{5}  = 28 \\ n = 28 \\ thank \: you

7 0
3 years ago
What is the first step in writing f(x) = 6x2 + 5 – 42x in vertex form?
Marina CMI [18]
The first step to getting this in vertex form would be to put this in proper standard form. This is so that you can split the middle term which is a step of completing the square. 
7 0
3 years ago
Two less than 4 times a number is the same as the number plus 10​
Kobotan [32]

Answer:

The answer is 4.

Equation: 4x-2=x+10

Step-by-step explanation:

6 0
3 years ago
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