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Luba_88 [7]
3 years ago
6

One kind of bacteria in a laboratory culture triples every 30 minutes. Suppose the culture is started with 20 bacteria cells. Ho

w many bacteria will there be after two hours?​
Mathematics
1 answer:
IgorC [24]3 years ago
3 0

Answer:

2 hours = 4 * 30 minutes

30 * 3 = 90

90 * 3 = 270

270 * 3 = 810

810 * 3 = 2430

So after 2 hours you will have 2430 bacteria cells.

Step-by-step explanation:

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Simplify the expression. (7x + 3) + (4x - 1) - (2x + 4)
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Answer:

9x -2

Step-by-step explanation:

(7x + 3) + (4x - 1) - (2x + 4)

Distribute the minus sign

(7x + 3) + (4x - 1) - 2x - 4

Combine like terms

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3 0
3 years ago
1
luda_lava [24]

Answer:

See the solution

Step-by-step explanation:

4 0
2 years ago
Find the area of the shape shown below.
sveticcg [70]

Answer:

A = 15u²

Step-by-step explanation:

Area of a Trapezoid Formula:

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\frac{3}{2}*(7+3)

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6 0
2 years ago
In this excerpt the servant is a comic figure because he unknowingly invites his master
dedylja [7]

Answer:

Yes he would be

3 0
3 years ago
Evaluate: 8 - 9+(-2)
Kobotan [32]
Evaluate : 8 - 9 + (-2)



8-9= -1 (because if you take away 9 from 8, you will end up with a negative number since there isn’t enough to take away.)

-1 + -2 = -3 (this is because when you are adding two negative numbers together, you will basically just add -1 and -2 as you would normally, then you would transfer the negative sign as well to make it -3)

Finally, your answer to this question is -3.
5 0
3 years ago
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