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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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(picture)<br>complete it​
Free_Kalibri [48]

Answer:

I do not know

Step-by-step explanation:

I don't have a good idea

8 0
3 years ago
Read 2 more answers
Question 5 (5 points)
vivado [14]

Answer:

(x-9.291)\cdot (x + 1.292)

Step-by-step explanation:

The factors of the given polynomial (x^{2}-8\cdot x - 12) are derived from the General Formula for Second-Order Polynomials:

x = \frac{8 \pm \sqrt{64 - 4\cdot (1)\cdot (-12)}}{2\cdot (1)}

x_{1} \approx 9.291 and x_{2} \approx -1.292

The factors of the polynomial are:

(x-9.291)\cdot (x + 1.292)

5 0
3 years ago
Read 2 more answers
Find the total surface area of the cuboid
vivado [14]

Answer:

A = 148 cm^2

Step-by-step explanation:

To calculate the surface area of the cuboid we use the following equation

A = 2 x (lh + lw+ hw) (l: length, w: width, h: height)

A = 2 x (6*5 + 6*4 + 5*4)

A = 2 x (30 + 24 + 20)

A = 2 x 74

A = 148 cm^2

7 0
3 years ago
Explain how you would solve -5/8 divided by 2/3 and what the solution is?
andre [41]

Answer:

-15/16

Step-by-step explanation:

-5/8 ÷ 2/3

Copy dot flip

-5/8 * 3/2

Multiply the numerators

-5*3 = -15

Multiply the denominators

8*2 =16

Put the numerator over the denominator

-15/16

4 0
3 years ago
What is 87.252 dividend by 2.2 I am not sure how to do the work
WARRIOR [948]

Answer:

39.66

Step-by-step explanation:

If the divisor is not a whole number, move decimal point to right to make it a whole number and move decimal point in dividend the same number of places.

Divide like you usually do

Put decimal point directly above decimal point in the dividend.

Check your answer.


7 0
3 years ago
Read 2 more answers
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