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sineoko [7]
3 years ago
6

A Petri dish is growing bacteria. It starts with 3 cells on day 1, 9 cells on day 2, and continues tripling the number of cells

every day after that. How many cells of bacteria are there on day 5? 3 5 5 3 15 18
Mathematics
1 answer:
n200080 [17]3 years ago
3 0

Answer:

243

Step-by-step explanation:

Given that:

Day 1 = 3

Day 2 = 9

After the 2nd day, number of cells continue to triple ;

Day 3 = 9^3

P(t) = 9 * 3^3

P(t) = 9 * 27

= 243

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kirill [66]

Answer:

A(square) = x*x= x^2

A(rectangle) = (a-2) (a+2) = a^2 +2a- 2a-4 = a^2 -4

A(rectangle) = A(square) -4

Step-by-step explanation:

For this case we assume that the square have sides of length x.

So then the area for this square is given by A(square) = x*x= x^2

We have a rectangle and on this case we have this information :" the rectangle has side lengths 2 less and 2 more than  a square"

So then the sides of the rectangle needs to have lengths a-2 and a+2, and if we find the area for the rectangle we got:

A(rectangle) = (a-2) (a+2) = a^2 +2a- 2a-4 = a^2 -4

And as we can see th area for the rectangl is 4 units less than the area for the rectangle:

A(rectangle) = A(square) -4

4 0
3 years ago
A rectangle has a length of x and a width of 6x^3 + 7 − x^2. Find the perimeter of the rectangle when the length is 5 feet.
Alisiya [41]
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Step-by-step explanation:

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Sekhar gives a quarter of his sweets to Renu and then gives 5 sweets to Raji. He has
Feliz [49]

Answer:

16 sweets

Step-by-step explanation:

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Sweets given to Raji = 5

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x = \frac{1}{4}x +5 + 7\\\\x -\frac{1}{4}x = 12\\\\\frac{4*x}{1*4}x-\frac{1}{4}x = 12\\\\\frac{4x}{4}-\frac{1}{4}x= 12\\\\\frac{3x}{4}=12\\\\x = 12*\frac{4}{3}\\\\x=4*4\\\\x=16

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2 years ago
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