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gavmur [86]
3 years ago
14

-7(5-3x)=-35 what is the x in the problem

Mathematics
2 answers:
Irina-Kira [14]3 years ago
8 0

Answer:

x = 0

Step-by-step explanation:

-7(5-3x)=-35

Divide by -7

-7/-7(5-3x)=-35/-7

5 -3x = 5

Subtract 5 from each side

5-3x-5 = 5-5

-3x=0

Divide by -3

x=0

givi [52]3 years ago
4 0

Answer: x = 0

Step-by-step explanation: Start by distributing the -7 through the parenthses on the left side of the equation.

-7(5) is -35 and -7(-3x) is 21x.

So we have -35 + 21x = -35.

Next, isolate the x term by adding 35 to both sides.

When we do this, we get 21x = 0.

Now divide both sides by 21 and <em>x = 0</em>.

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Se tienen 16 maquinas cuyo rendimiento es del 90% y produce 4800 articulos en 6 dias trabajando 10horas diarias. Si se desea pro
cupoosta [38]

Answer:

5 máquinas.

Step-by-step explanation:

Sabemos que con 16 máquinas, cada una con un rendimiento del 90%, se producen 4800 artículos en 6 días trabajando 10 horas diarias.

Primero extraigamos toda la información útil de esto.

Sea R la velocidad con la que trabaja una máquina con un rendimiento del 100%.

Entonces nuestras máquinas van a trabajar a:

(90%/100%)*R = 0.9*R

16 máquinas juntas trabajaran en total a 16 veces esa cantidad, o:

16*0.9*R

Luego también sabemos que las máquinas trabajan 10 horas al día por 6 días, es decir, trabajan un total de:

6*10h = 60h

60 horas.

Entonces podemos plantear la ecuación:

(16*0.9*R)*60h = 4800 artículos.

Ahora podemos despejar el valor de R.

R = (4800 artículos)/(16*0.9*60 horas) = 5.556 artículos/hora

Ahora:

Se desea producir 1200 artículos.

En 8 días trabajando 9 horas al día, es decir en:

8*9h = 72 horas

Con N máquinas al 60%.

Cada máquina al 60% trabajara con una velocidad de:

0.6*R

N máquinas entonces trabajaran en conjunto a:

N*(0.6*R)

Con la información que se nos da, podemos plantear la ecuación:

N*(0.6*R)*72horas = 1200 artículos.

Queremos resolver esto para N, el número de máquinas, entonces aislamos N

N = (1200 artículos)/((0.6*R)*72horas)

Reemplazando el valor de R, que es 5.556 artículos/hora

N = (1200 artículos)/((0.6*5.556 artículos/hora)*72horas) = 5

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5 0
3 years ago
Please help me i need the answer
Amiraneli [1.4K]

Answer:

A

Step-by-step explanation:

7 0
3 years ago
Find the 30th term of the following sequence. 1, 7, 13, 19,.. 174. 175. 180. 181.
shepuryov [24]
The first term a = 1, 

Common difference, d: 7 - 1 = 6.

a(n) =  a + (n -1)d,        

For 30th term.      =  1 + (30 -1)*6
 
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8 0
3 years ago
Group Tens as Hundreds
IrinaK [193]

Answer:

Write how many groups of tens there are

Circle groups where there are ten groups of tens

Write how many hundreds there are

Write the total number of tens and hundreds there are

3 0
3 years ago
How do you convert 700 centimeters to meters
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We set up a proportion to do this. There are 100 cm in 1 meter to we use this:

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The cm's will cancel each other out since there is one in both the numerator and the denominator. 

This leaves you with:

700 / 100 = 7.

The only units left when the centimeters cancel out is meters. 

So there are 7 meters in 700 centimeters. 
3 0
3 years ago
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