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3241004551 [841]
3 years ago
8

Use sigma notation to represent the following series for the first 12 terms. 2 +(-8) +32 + (-128) + .

Mathematics
2 answers:
Marysya12 [62]3 years ago
7 0
\displaystyle\sum_{i = 1}^{12} 2(-4)^{i-1}
VashaNatasha [74]3 years ago
5 0
This is simply Order of Operations. The answer should be 104.
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5y+x2÷2 when x=4 and y= -3. when x=4 and y=-3, 5y + x2 ÷2= ​
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3 years ago
Which represents a side length of a square that has an area of 450 square inches?
amm1812

The formula of an area of a square:


A=a^2


a - a side


We have A=450\ in^2


substitute:


a^2=450\to a=\sqrt{450}\\\\a=\sqrt{225\cdot2}\\\\a=\sqrt{225}\cdot\sqrt2\\\\\boxed{a=15\sqrt2\ in}


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3 years ago
Find the indicated real nth root(s) of a. n=3, a=729
marissa [1.9K]

Answer:

9

Step-by-step explanation:

n=3, a=729

For any odd integer, n ; a will have only one real nth root which will be a positive integer.

Similarly, for any integer, n, that is > 1 ; related by the expression ;

p^n = a ; the nth root of a = p

Therefore,

If n = 3 ; a = 729

p^3 = 729

To obtain the value of p ; take the cube of both sides

(p^3)*1/3 = 729^1/3

p = 9

Hence, the real nth root of 729 is +9 when n = 3

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