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Sati [7]
3 years ago
5

Una persona pensó hacer una obra en 15 días; pero tardó 10

Mathematics
1 answer:
Ivenika [448]3 years ago
8 0

Answer:

<em>Trabajó 3 horas al día</em>

Step-by-step explanation:

<u>Proporcionalidad</u>

Una persona planeó terminar la obra en 15 dias, pero tardó 10 dias adicionales porque trabajó 2 horas menos por día.

Usaremos proporciones para calcular las horas de trabajo diarias.

Si 2 horas diarias representan 10 dias de atraso, entonces cada hora representa 5 dias de trabajo.

Si la obra tardaba 15 dias, entonces la persona trabajó 15/5 = 3 horas diarias.

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A number multiplied by itself and then by itself again gives 1000. What is the number?
sergij07 [2.7K]
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3 years ago
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I need help and i would appreciate it and can you explain (That's if you can explain)
Finger [1]

Answer:

x=-2

y=-3

Step-by-step explanation:

-9x+4y = 6

9x+5y = -33

We will add these together to eliminate x

-9x+4y = 6

9x+5y = -33

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0x +9y =- 27

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Divide by 9

9y/9 = -27/9

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Add 15 from each side

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6 0
4 years ago
Which of the following is a rational number?<br> 148, 49, 50, 51
Katarina [22]

Answer:

50 is the answer because you can divide 2 numbers to get this number.

4 0
3 years ago
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There are 765 marbles in a box. There are twice as many blue marbles as green marbles. There are three times as many red marbles
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g=green
r=red
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r=6g

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r=6g
g=g
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Answer:

\boxed{\bold{Z < \frac{-10}{3} }}

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Z < -10 / 3

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