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Svetach [21]
3 years ago
10

Which expression is equivalent to a^3 • b^3 • a^-3 • b?

Mathematics
1 answer:
Dmitry [639]3 years ago
3 0
The answer is B! b^4. If we examine the expression given, we have a^3 * b^3 * a^-3 * b= a^3/a^3 * b^3 * b = 1 * b^4

Hope this helps! Any questions please feel free to ask!!

Thank you!!
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4 0
3 years ago
Show your work (-2)+3​
sashaice [31]

Answer: -2+3=1

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3 0
3 years ago
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The number of bacteria in a certain culture doubled every hour. If there were 30 bacteria present in the culture initially, how
vichka [17]

Answer:

The number of bacteria after 8th will be 3840

Step-by-step explanation:

Given the initially 30 bacteria present in the culture.

Also, the number of bacteria got doubled every hour.

So, using the equation

A=A_0r^{n-1}

Where A is number of bacteria after n hours.

A_0 is bacteria present initially.

r is the common ration, in our problem it is given that bacteria doubles every hour. So, r=2

And n is the number of hours. In our problem we need amount of bacteria at the end of 8th hours. So, n=8

Plugging values in the formula we get,

A=30(2)^{8-1}\\A=30\times 2^7\\A=30\times 128\\A=3840

So, number of bacteria after 8th will be 3840

3 0
3 years ago
Which expression represents the following calculation?
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Answer:

(381-22)*16

Step-by-step explanation:

(381-22)*16

3 0
3 years ago
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