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pychu [463]
3 years ago
12

21 across - 1 across = ?

Mathematics
2 answers:
hodyreva [135]3 years ago
7 0

Answer:

21 across-1 across

20 across should be the answer

Savatey [412]3 years ago
3 0

Answer:

21 across - 1 across

=20 acrosss

Step-by-step explanation:

hope it helps you

steffie matt

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1) In a geometric progression, the first term
My name is Ann [436]

\bf \qquad \qquad \textit{sum of a finite geometric sequence} \\\\ S_n=\sum\limits_{i=1}^{n}\ a_1\cdot r^{i-1}\implies S_n=a_1\left( \cfrac{1-r^n}{1-r} \right)\quad \begin{cases} n=n^{th}\ term\\ a_1=\textit{first term's value}\\ r=\textit{common ratio}\\ \cline{1-1} a_1=21\\ r=2\\ n=25 \end{cases} \\\\\\ S_{25}=21\left( \cfrac{1-2^{25}}{1-2} \right)\implies S_{25}=21\left( \cfrac{-33554431}{-1} \right) \\\\\\ S_{25}=21(33554431)\implies S_{25}=704643051

5 0
3 years ago
Can you please help me out​
andrew11 [14]

Answer:

Not skewed.

Step-by-step explanation:

It's not going left or right, it's equal on both sides!

If I'm wrong, I'm EXTREMELY sorry!!!

If I'm right, you're welcome!

5 0
3 years ago
easiest problem ever for 20 stars opls help ????? Karen's dad's car, moving at a constant speed, covers 75 meters in 5 seconds.
JulsSmile [24]
The answer is 54 km/hr
3 0
3 years ago
Find the sum of the first 36 terms of the following series, to the nearest integer.<br> 2, 5,8,...
Ivenika [448]

Answer:

Step-by-step explanation:

Comment.

You need to use the addition formula when the last term is not given. Mind you, you could find it, but it is just as easy to get the answer without it.

Givens

a1 = 2

d = 3

n = 36

Formula

Sum = n(a1 + (n - 1)* d)/2

Solution

Sum  =  36(2 + (36 - 1)*3 )/2                Combine the brackets

Sum = 36 (2 + 35*3 )/2

Sum = 36(2 + 105) /2                          Combine the brackets

Sum = 36 * 107/2                                    

Sum = 3852 /2

Sum = 1926

Answer

1926

6 0
3 years ago
The discount on a new stereo was $180. This was a discount of 18%. What was the original selling price?
katrin2010 [14]

Answer: 180.18

Step-by-step explanation:

6 0
3 years ago
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