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romanna [79]
3 years ago
15

ANSWER FAST

Mathematics
1 answer:
irga5000 [103]3 years ago
8 0
<span>A. 15+0.6(15)
You posted this question twice, hah.
Do you need work to show it?
</span><span />
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Help anyone please :)
BARSIC [14]
Nah... The answer is Aida’s work. 5 to the power of 4 is the same as 5x5x5x5.
8 0
3 years ago
I’m not understanding the answer listed on this site to the following question:
kobusy [5.1K]
Okay, I think I understand this. Our first step is to solve how long the string is after he used some of it to tie the package. I have a feeling we have to subtract 7/8 - 1/5. Find a least common multiple (in this case, it's 40) and our new fractions are 35/40 and 8/45. Subtract:

35/40 - 8/40 = 27/40.

I don't think this can be simplified down any further as they do not have any common factors. So with that in mind, let's divide 27/40 with 5/1 (5/1 is basically 5 wholes but in fraction version)

When dividing fractions, you want to use the KCF technique (my old math teacher taught me this). Keep the first fraction the same (in this case, 27/40), change the sign from multiplication to division, and flip 5/1 to get it's reciprocal, 1/5. The equation will look like this:

27/40 * 1/5 = 27/200

So each piece is about 27/200 m in length (or 0.135 m in length).

If this is wrong, please let me know, but this is what I got out of this question. I hope this helped you :)
4 0
3 years ago
How many terms are there in a geometric series if the first term is 4, the common ration is 3 and the sum of the series is 160
Marina CMI [18]
\bf \qquad \qquad \textit{sum of a finite geometric sequence}&#10;\\\\&#10;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 &#10;\begin{cases}&#10;n=n^{th}\ term\\&#10;a_1=\textit{first term's value}\\&#10;r=\textit{common ratio}\\&#10;----------\\&#10;a_1=4\\&#10;r=3\\&#10;S_n=160&#10;\end{cases}

\bf 160=4\left( \cfrac{1-3^n}{1-3} \right)\implies 160=4\left( \cfrac{1-3^n}{-2} \right)\implies 160=-2(1-3^n)&#10;\\\\\\&#10;160=2(3^n-1)\implies \cfrac{160}{2}=3^n-1\implies 80=3^n-1&#10;\\\\\\&#10;81=3^n~~&#10;\begin{cases}&#10;81=3\cdot 3\cdot 3\cdot 3\\&#10;\qquad 3^4&#10;\end{cases}\implies 3^4=3^n\implies 4=n
3 0
3 years ago
Please help me with another problem
lorasvet [3.4K]
"one" will fill both blanks.
8 0
3 years ago
Kim had 13 pencils she gave some pencils to her friend and then she got two new pencils now she has 9 pencils how many pencils d
nika2105 [10]

She gave 4 because 9+4=13

7 0
3 years ago
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