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Anton [14]
2 years ago
14

(-3c+6) + (-c+8) simplify with a step by step please

Mathematics
1 answer:
mel-nik [20]2 years ago
6 0

Step-by-step explanation:

= ( - 3c + 6) + ( - c + 8)

=  - 3c + 6 - c + 8

=  - 3c - c + 6 + 8

= -4c + 14

hence -4c + 14 is the answer ...

hope it helped !!

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Una bacteria se divide en dos cada 6 minutos Si a las 12:15 horas se coloca una bacteria en un recipiente¿ A que hora habrá 128
DaniilM [7]

Answer:

A las 12:57 horas habrá 128 bacterias en el recipiente.

Step-by-step explanation:

Una función exponencial es aquella en que la variable independiente x aparece en el exponente y tiene de base una constante a. Su expresión es:

f(x)= aˣ

Siendo a un real positivo, a > 0, y diferente de 1.

Cuando 0 < a < 1, entonces la función exponencial es una función decreciente y cuando a > 1, es una función creciente.

Algunos tipos de bacterias se reproducen por "mitosis", dividiéndose la célula en dos cada espacios de tiempo pequeños, como sucede en este caso. Entonces, "a" tendrá un valor de 2, que es la cantidad en la que se divide la bacteria, y "x" será los intervalos de tiempo. Si hay 128 bacterias en el recipiente, la expresión exponencial del crecimiento de la bacteria en x intervalo de tiempo será:

2ˣ= 128

Una manera de resolver la x es aplicando logaritmos. Entonces, aplicando el logaritmo común de ambos lados. (Cuando la base no está escrita, se trata de la base 10):

log (2ˣ) = log (128)

Aplicando la propiedad de la potencia de los logaritmos:

x* log (2)= log (128)

x= log (128) ÷ log (2)

x= 7

Cada intervalo de tiempo tiene 6 minutos, que es el tiempo en que una bacteria se divide en 2. Entonces, el tiempo que se tarda en obtener 128 bacterias se calcula como:

7 intervalo* 6 minutos= 42 minutos

Si a las 12:15 horas se coloca una bacteria en un recipiente, entonces el horario a la que habrá 128 bacterias se calcula como:

12:15 + 42 minutos= 12:57

<u><em> A las 12:57 horas habrá 128 bacterias en el recipiente.</em></u>

3 0
3 years ago
(2h3 + 6h) + (3h3 - 7h - 3) standard form sum or difference.​
worty [1.4K]

Answer:

5h^3- h - 3

Step-by-step explanation:

Given

(2h^3 + 6h) + (3h^3 - 7h - 3)

Required

Standard form

We have:

(2h^3 + 6h) + (3h^3 - 7h - 3)

Remove bracket

(2h^3 + 6h) + (3h^3 - 7h - 3) =2h^3 + 6h + 3h^3 - 7h - 3

Collect like terms

(2h^3 + 6h) + (3h^3 - 7h - 3) =2h^3 + 3h^3+ 6h  - 7h - 3

(2h^3 + 6h) + (3h^3 - 7h - 3) = 5h^3- h - 3

Hence, the standard form is:

5h^3- h - 3

3 0
3 years ago
What is 4 multiplied by 5 7/9 as a mixed number or fraction
Andrei [34K]
The answer is 23 and 1÷9

First you multiply 4 by 5 and wind up with 20
Then you multiply four by 7÷9.
That gets you 28÷9
You take out all the nines you can from 28, three in this case.
That gets you 27÷9 + 1÷9
Your total thing is 20+27÷9+1÷9
That equals 20+3+1÷9
That equals 23 and 1÷9
8 0
3 years ago
What is the value of the expression? PLEASE HELP!!!!PLEASE!!!!!!!!!!!!!<br> 40÷[20−4⋅(7−4)]
KatRina [158]
The correct answer is 10
3 0
4 years ago
Ashlynn is selling boxes of cookies for a fundraiser. If she raised $26 selling 8 boxes, how much will she raise if she sells 40
Alexxandr [17]
She will make $130

26/8=3.25
3.25 x 40=130
3 0
3 years ago
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