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ra1l [238]
3 years ago
11

Over the next week you want to watch a movie a day. In how many ways can this be done if you have 8 movies

Mathematics
2 answers:
Leto [7]3 years ago
7 0
<span>You can select from any of the 8 on the first day, leaving 7 to choose from on the second day, leaving 6 for the third. So, 8 x 7 x 6 x 5 x 4 x 3 x 2 or 8! That's 8factorial, so multiply those out or use a calculator to get 8! and that is your answer.</span>
tamaranim1 [39]3 years ago
6 0

Answer:

40,320

Step-by-step explanation:

8 x 7 x 6 x 5 x 4 x 3 x 2

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Can someone help me with this?​
Anna35 [415]

Answer:

Let 'a' be the first term, 'r' be the common ratio and 'n' be the number of terms

Series = 2+6+18.......= 2+2•3¹+ 2•3².......= 728

Now,

Sum =  \frac{a( {r}^{n} - 1) }{(r - 1)}   \\

So,

\frac{a( {r}^{n} - 1)}{(r - 1)}  = 728 \\  \frac{2( {3}^{n} - 1) }{(3 - 1)}  = 728 \\  \frac{2( {3}^{n} - 1) }{2}  = 728 \\  {3}^{n}  - 1 = 728 \\ {3}^{n}=728+1\\ {3}^{n}  = 729 \\  {3}^{n}  =  {3}^{6}  \\ \boxed{ n = 6}

Therefore, number of terms is 6

  • 6 is the right answer.
3 0
3 years ago
When CA= 3x-1 and SR=5x+4, what is CA?
avanturin [10]

Answer:

CA=17

Step-by-step explanation:

From given picture we see that A and C are the mid points of sides QR and QS respectively.

We know that line joining mid points of the two sides of triangle is always half of the length of the third side.

So that means:

2*CA=SR

2(3x-1)=5x+4

6x-2=5x+4

6x-5x=4+2

x=6

plug value of x into CA=3x-1

CA=3*6-1=18-1=17

Hence final answer is CA=17

8 0
3 years ago
Ind the next term for the given sequence.52, 45, 38, 31,
o-na [289]
The answer is 24. To get from one term to the next, you have to find the difference. To get from 52 to 45, you minus 7. It is the same with the other terms. So 31 - 7 = 24
4 0
3 years ago
Read 2 more answers
How do I add mixed numbers<br>8 1/2 +1/6<br>​
sergij07 [2.7K]

Answer:

<u><em>26/3  is your answer as a improper fraction </em></u>

<u><em>8.6 is your answer as a decimal </em></u>

<u><em>8 2/3 is your answer as a mixed number </em></u>

How to add mixed numbers Step-by-step:

1) find the least common denominator

2) find the equivalent fractions  

3) add the the fractions, add the whole numbers

4) write your answer in lowest terms

6 0
3 years ago
Read 2 more answers
In a recipe mike uses 4 cups of brown sugar for every 3 cups of flower. What is ratio of flour to brown sugar SIMPLEST FORM.
kicyunya [14]

Answer:

3:12 = 1:4

Step-by-step explanation:

3 cups of flour = 4 cups brown sugar

4 x 3 = 12

3:12 = 1:4 (simplest form)

5 0
3 years ago
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