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stepladder [879]
3 years ago
13

What does +79 - 21 =

Mathematics
1 answer:
valina [46]3 years ago
5 0
Lol the answer is 58
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Un apostador pierde en su primer juego el 30% de su dinero, en el segundo juego pierde el 50% de lo que perdió; finalmente en el
sergiy2304 [10]

Responder:

26,62

Explicación paso a paso:

Sea x el dinero original que tenía el jugador:

si un jugador pierde en su primer juego el 30% de su dinero, la cantidad perdida será;

= 30/100 \ of \ x\\= 0.3x

Si en el segundo juego pierde el 50% de lo que perdió, entonces la cantidad perdida en el segundo juego será:

= 50/100 \ of \ 0.3x\\= 0.5 \times 0.3x\\= 0.15x

Si en el tercer juego pierde el 40% de todo lo que ha perdido, la cantidad perdida en el tercer juego será:

=\frac{40}{100} \ of \ (0.3x+0.15x) \\= 0.4(0.45x)\\= 0.2025x

Si la cantidad que le queda para seguir apostando es de 37 soles, entonces para calcular la cantidad original que tiene, sumaremos toda la cantidad perdida y la cantidad restante y equipararemos la cantidad original x como se muestra:

0,3x + 0,15x + 0,2025x + 37 = x

0,6525x + 37 = x

x-0,6525x = 37

0,3475x = 37

x = 37 / 0,3475

x = 106,48

La cantidad que tenía originalmente era de 106,48

75% de 106,48

= 75/100 * 106,48

= 0,75 * 106,48

= 79,86

Tomando la diferencia entre su monto original y su 75% será:

= 106.48-79.86\\= 26.62

3 0
2 years ago
20%= 2/?. What is the question mark?<br> 5<br> 100<br> 10<br> 20
AlekseyPX

Answer:

10

Step-by-step explanation:

8 0
2 years ago
A bag contains 5 green marbles and 10 Red marbles what is the probability of selecting a green marble not replacing it and then
kari74 [83]

Answer:5

Step-by-step explanation:

6 0
3 years ago
The correlation coefficient r between an employee’s age, x, and yearly salary, y, is 0.633. What percent of the variation in yea
son4ous [18]

Answer:

The answer is 40.1%

Step-by-step explanation:

I just took the test

6 0
3 years ago
If the endpoint is (3/2, 1 1/2), and the midpoint is (2/5, -8/5) what is the other endpoint
alukav5142 [94]

Answer:

The answer to your question is  ( -7/10, -4 7/10)

Step-by-step explanation:

Data

Enpoint (3/2, 1 1/2)                  x1 = 3/2     y1 = 1 1/2

Midpoint (2/5, -8/5)                xm = 2/5    ym = -8/5

Entpoint 2 ( x, y)

Formula

Xm = (x1 + x2)/2    Solve for x2    x2 = 2xm - x1

Ym = (y1 + y2)/2     Solve for y2   y2 = 2ym - y1

Substitution

                  x2 = 2(2/5) - 3/2

                  x2 = 4/5 - 3/2

                  x2 = (8 - 15)/10

                 x2 = -7/10

                  y2 = 2(-8/5) - 1 1/2

                 y2 = -16/5 - 3/2

                 y2 = (-32 - 15) / 10

                y2 = -47/10 = -4 7/10

5 0
3 years ago
Read 2 more answers
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