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dem82
7 days ago
14

Dev has 9 shells. Zoe has 55 shells, Zoe gives some shells to Dev. Now zoe has 3 times as many shells as dev. How many shells do

es Zoe give to Dev.
Mathematics
1 answer:
zzz [11.7K]7 days ago
6 0
Zoe gives 7 shells to Dev, leaving her with 48. Dev then has 16 shells in total. Step-by-step explanation: Denote the initial shell count for Dev as A and Zoe’s as B. Based on the scenario where Zoe transfers x shells to Dev while then possessing three times the number of shells relative to him, the resulting references show that Zoe provided 7 shells, leaving her count at 48 while Dev's total became 16.
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Un ingeniero civil a cargo de una obra contrata una cierta cantidad de obreros. Estima que, si le
lawyer [12081]

Al establecer un sistema de ecuaciones lineales, se determina que el total de obreros que contrató el ingeniero civil es 50.

Para descubrir cuántos obreros fueron contratados, se debe formular un sistema de ecuaciones lineales con dos ecuaciones y dos incógnitas, de la siguiente manera:

M - 1400*x = -8000   (1)

M - 1200*x = 2000   (2)

Donde:

M: representa la incógnita correspondiente al capital del ingeniero

x: simboliza la incógnita que denota el total de obreros

De la ecuación (1) podemos deducir:

M = 1400*x - 8000   (3)

Utilizando la ecuación (3) en la ecuación (2) podríamos calcular el valor de x (número de obreros):

1400*x - 8000 - 1200*x = 2000

200*x = 10000

x = 50

El monto inicial del ingeniero, según la ec (3), sería:

M = 1400*50 - 8000 = 62000

Por lo que, el número de obreros contratados por el ingeniero es 50.

Si quieres conocer otro método para resolver sistemas de ecuaciones lineales, puedes ingresar aquí:

                                                                                         

Espero que esto te ayude!

8 0
1 month ago
mr. Martin is giving a math test next period. The test, which is worth 100 points, has 29 problems. Each problem is worth either
tester [11849]

The first equation is x + y = 29, and the second is 5x + 2y = 100.

8 0
1 month ago
Read 2 more answers
How much would it cost to buy 100 shares in ODX group Inc and 300 shares
PIT_PIT [11862]

Complete Question

The entire question can be found in the first uploaded image

Answer:

The expense for acquiring 100 shares of ODX group Inc and 300 shares of peer Comms Lts is

         C  =  \$ 775

Step-by-step explanation:

   From the chat, the expense for 100 shares of ODX is \$175

    The price of 100 shares of peer Comms Lts is \$ 200

Thus, the cost for 300 shares of peer Comms Lts amounts to k  =  3 * 200 =  \$ 600

Overall, the total cost for 100 shares of ODX group Inc and 300 shares of peer Comms Lts can be calculated as

           C  =  175 + 600

           C  =  \$ 775

 

 

7 0
1 month ago
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