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3 years ago

15

Ana cuenta una noticia a 5 personas. A la hora siguiente, cada una de ellas se la cuenta a otras 5, y así sucesivamente. ¿Cuánto

tardan en conocerla 3 000 personas?

1 answer:

TiliK225 [7]3 years ago

5 0

Answer:

3 horas si se toma apartir de lo que se dice en el problema

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Use substitution to solve the system.<br> x=3y+5<br> 5x-4y=14<br> ______________<br> x=<br> y=

nataly862011 [7]

So what you do is go 5(3y+5)-4y=14 which equals 15y+25-4y=14 which turns into 11y+25=14 than you move the 25 over which equals 11y=-11 so y=-1 then you enter -1 in for y which looks like 5x-4(-1)=14 than you solve that which is 5x+4=14 than you move the 4 over and you get 5x=10 than x=2

x=2
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3 years ago

Jerry had 45 tickets for games at a carnival.he used 1/3 of the tickets to play ball-toss game. He used 2/5 of the tickets to pl

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2 years ago

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The area of the rectangle is 5,332.

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3 years ago

Use the formula to evaluate the series 1/4 + 1/9 + 1/27 + 1/81.

Dmitriy789 [7]

Is the first term supposed to be 1/4, or did you actually mean 1/3?

I'll assume the latter. Write

$S=\dfrac13+\dfrac19+\dfrac1{27}+\dfrac1{81}$
$S=\dfrac13+\dfrac1{3^2}+\dfrac1{3^3}+\dfrac1{3^4}$
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$\implies S-\dfrac13S=\dfrac13-\dfrac1{3^5}$
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3 years ago

SashulF [63]

Answer:

A.7

B.4

Step-by-step explanation:

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3 years ago