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docker41 [41]
1 year ago
13

Describe the steps you would use to simplify 6x + 5y + 8x− 2y + 11y + 4.

Mathematics
2 answers:
STALIN [3.7K]1 year ago
8 0

Answer:

14x+14y+4

Step-by-step explanation:

Take a look at the attachment...

Hope this helps! :)

antiseptic1488 [7]1 year ago
4 0

Answer:

Step-by-step explanation:

In math there is a general rule is  "Like adds like"

1. Identify your common variables (x,y,z)

2. add the common variables

Solution

6x + 5y + 8x -2y +11y +4

x and y variables add

(6x+8x) + (5y-2y + 11y) + 4

14x + 14+ + 4

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Answer:

10.96 hours will take for 85% of the lead to decay.

Step-by-step explanation:

Suppose A represents the amount of Pb-209 at time t,

According to the question,

\frac{dA}{dt}\propto A

\implies \frac{dA}{dt}=kA

\int \frac{dA}{A}=\int kdt

ln|A|=kt+C_1

A=e^{kt+C_1}

A=e^{C_1} e^{kt}

\implies A=C e^{kt}

Let A_0 be the initial amount,

A_0=C e^{0} = C

\implies A=A_0 e^{kt}

Since, the half-life of 3.3 hours.

\implies \frac{A_0}{2}=A_0 e^{3.3k}\implies e^{3.3k}=0.5\implies k=-0.21004

\implies A=A_0 e^{-0.21004t}

Here, A_0=1\text{ gram}

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By substituting the values,

0.15A_0=A_0 e^{-0.21004t}

0.15=e^{-0.21004t}

\implies t\approx 10.96\text{ hour}

6 0
3 years ago
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Answer:

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Step-by-step explanation:

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Help me with my math homework
Sonja [21]
If u look up the answers to those questions they will be on a different site not this one tho if u need help lmk
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3 years ago
8a+ 12a - 7b - 9b - 11a<br> How to combine like terms
Karo-lina-s [1.5K]

Answer:

8a+12a-11a=9a

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3 years ago
Boris buys candy that costs $7 per pound. He will spend at least $63 on candy. What are the possible numbers of pounds he will b
IgorLugansk [536]

Answer:

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3 years ago
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