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Vedmedyk [2.9K]
3 years ago
10

The colony starts with 1 bacterium and triples every 30 minutes how many bacteria will the colony contain at the end of 24 hours

Mathematics
2 answers:
slava [35]3 years ago
7 0
Answer:  7.98 \times 10^{22}


Explanation:

30 mins = 0.5 hour

Number of 30 mins in 24 hours = 24 ÷ 0.5 = 48

Number of bacterium = 3^{48} = 7.98 \times 10^{22}
OLEGan [10]3 years ago
7 0
3^{12} because it triples 30 minute 12 times which multiplies 3= 531441 think im right let me know if i wrong
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Solve the inequality. Show your work<br><br> 6y -8 ≤ 10
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       y ≤ 3

Y is less than or equal to 3.

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B is the midpoint of AC and E' is the midpoint of BD. If A(-9,-4), C(-1, 6), and E(-4,-3), find the coordinates of D.
Ipatiy [6.2K]
The coordinates for D are (-4, -7)

First we must locate point B as it is vital to finding the midpoint of BD. To do this, we take the average of the endpoints AC since B is its midpoint. 

x values = -9 + 1 = -8
Then divide by 2 for the average -8/2 = -4

y values = -4 + 6 = 2
Then divide by 2 for the average 2/2 = 1

Therefore B must be (-4, 1)

Now we know the values of E must be the average of B and D. So we can write equations for each coordinate since we know they are averages. 

x - values = (Bx + Dx)/2 = Ex
(-4 + Dx)/2 = -4 ---> multiply both sides by 2
-4 + Dx = -8 ---> add -4 to both sides
Dx = -4

y - values = (By + Dy)/2 = Ey
(1 + Dy)/2 = -3 ---> multiply both sides by 2
1 + Dy = -6 ---> subtract 1 from both side
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So the coordinates for D must be (-4, -7)
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3 years ago
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Please help don’t know the answer
77julia77 [94]

Answer:

D

Explanation:

I'm just typing this part to get to 20 characters

4 0
3 years ago
Three subtracted from 5 x a number is -128. what is that number
omeli [17]

5-3x=-128

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(5 - 3) x A = -128

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A = -64

3 0
2 years ago
Answer A, B, C, Please, and Thanks!
DochEvi [55]

A) The variable on the horizontal axis of the graph (the independent variable) is "pounds of rice". That is what the first number in the ordered pair (6, 18) represents.

The variable on the vertical axis of the graph (the dependent variable) is "total cost in dollars". That is what the second number in the ordered pair represents.

(6, 18) represents that the total cost of purchasing 6 lbs of rice is $18.

B) The unit price is found at the point where the independent variable has the value 1. That would be at the point (1, 3), which indicates the unit price is $3 per pound.

C) You would have to buy 4 lbs of rice for the total cost to be $12. There are at least two ways to find the answer.

  1. Draw a horizontal line on the graph at cost = $12. It intersects the graph at lbs = 4.
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3 years ago
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