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Lady bird [3.3K]
4 years ago
10

Consider the following geometric sequence. -5, 10, -20, 40,... If the recursive formula for the sequence above is expressed in t

he form an=b(cn-1)nwhat is b and c
Mathematics
1 answer:
andrew11 [14]4 years ago
3 0
The formula of the geometric sequence is the following :
u_n=bc^{n-1} wherein b is the first term and c is the rate. 
From the given data we deduce the parameters:
c=\dfrac{10}{-5}=-2,b=-5 
Therefore:
u_n=-5(-2)^{n-1} 
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SOMEONE PLEASE ANSWER AND I WILL GIVE BRAINLIEST :))
UNO [17]
Ok, so we know it costs $1.10 to make a pin, so the cost of making all 1000 pins must have been:
1.10 \times 1000 = 1100
We know that 35% of the pins, hence 350 pins, were given to charity (we assume this means donated for free), and so the company sold 650 pins.

60% of these we sold at $3 each;
0.60 \times 650 = 390
So 390 pins sold at $3 each comes to
390 \times 3 = 1170
So the company has already made $1170.

The other 40% of the 650 remaining pins (260 pins) were sold at $5 for 2. We assume from the question that they were only sold in pairs and were all sold, so we can essentially figure out that 130 pairs were sold at $5 each;
130 \times 5 = 650
So the company has sold the pins for $650 + $1170 = $1820

This means that the company has made
$1820 - $1100 = $720 as profit

So the percentage profit earned (profit/cost times 100%) would be
\frac{720}{1000}  \times 100 = 65.4545....
Which to one decimal place is 65.5% profit.

Hope this helped.



6 0
4 years ago
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There are 19 men and 31 women on an airplane. What is the ratio of the number of male passengers to the total number of passenge
castortr0y [4]

Answer:

19/50

Step-by-step explanation:

19 males and 50 people are in total

3 0
2 years ago
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Can anyone help me with number 3 please
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Answer:


I think is (B)
4 0
3 years ago
a family of 2 adults and 3 children went to dinner the total bill was 42 dollars each Childs dinner cost 4 dollars .how much did
Anna007 [38]
$30 for the adults. 3*4=12 42-12=30
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3 years ago
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Al terminar una obra tres albañiles cobran $16800 y se dividen el dinero a razón 5:7:9. Calcular cuánto dinero le corresponde a
NNADVOKAT [17]

Answer:

$4000, $5600 and $7200

Step-by-step explanation:

Let the money be 5x,7x and 9x.

Total collection of money is $16,800

ATQ,

5x+7x+9x=$16,800

21x=$16,800

x=\dfrac{16800}{21}\\\\x=\$800

So, the values are :

5x=5(800) = $4000

7x=7(800) = $5600

9x=9(800) = $7200

4 0
4 years ago
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