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nasty-shy [4]
3 years ago
13

If the number of bacteria in a colony doubles every 230 minutes and there is currently a population of 100 bacteria, what will t

he population be 690 minutes from now?
Mathematics
1 answer:
Nadusha1986 [10]3 years ago
6 0

Answer:

800

Step-by-step explanation:

In order to get the new population of bacteria in <em>690 minutes</em>, you have to know how often the bacteria will divided in the time frame. So, you have to <em>divide </em><em>690 minutes </em><em>by </em><em>230 minutes.</em>

  • 690 min. ÷ 230 min. = 3 times

The bacteria wil<u>l double its colony 3 times in 690 minutes</u>.

  • <em>First division:</em> 100 x 2 = 200 bacteria
  • <em>Second division:</em> 200 x 2 = 400 bacteria
  • <em>Third division:</em> 400 x 2 = 800 bacteria

Therefore, the population of bacteria will be 800 in 690 minutes.

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In the triangles,BC is congruent to RS and AC is congruent to TS If RT is greater than BA, which correctly compares angles C and
svp [43]
The answer is B i just took the test m∠C < ∠S
4 0
3 years ago
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For a given data group, simple exponential smoothing is being used to forecast demand. The forecast of a given period is 110, wh
motikmotik

Answer:

The smoothing constant alpha is 0.20 (Option a)

Step-by-step explanation:

To solve this problem, first we write the succession of the simple exponential smoothing:

s_t=\alpha x_t+(1-\alpha)s_{t-1}

Where s(t) is the forecast for period t, s(t-1) is the forecast for period (t-1), xt is the real demand for period t, and alpha is the smoothing constant.

All but the alpha constant are known

s(t)=109.2

s(t-2)=110

xt=110-4=106

Then, we can calculate alpha as:

s_t=\alpha x_t+(1-\alpha)s_{t-1}\\\\109.2=\alpha*106+(1-\alpha)*110\\\\109.2=(106-110)\alpha+110\\\\(110-106)\alpha=110-109.2=0.8\\\\4\alpha=0.8\\\\\alpha=0.2

7 0
4 years ago
Read 2 more answers
Can someone explain this to me? I really don't understand how to do it. I need help ASAP
igor_vitrenko [27]

THIS IS ONLY FOR THE RECTANGLE SRY I COUDLNT DO THE



0.25 ft^3

A rectangular tank is a generalized form of a cube, where the sides can have varied lengths. It is bounded by six faces, three of which meet at its vertices, and all of which are perpendicular to their respective adjacent faces. The equation for calculating the volume of a rectangle is shown below:

volume= length × width × height

EX: Darby likes cake. She goes to the gym for 4 hours a day, every day, to compensate for her love of cake. She plans to hike the Kalalau Trail in Kauai and though extremely fit, Darby worries about her ability to complete the trail due to her lack of cake. She decides to pack only the essentials and wants to stuff her perfectly rectangular pack of length, width, and height 4 ft, 3 ft and 2 ft respectively, with cake. The exact volume of cake she can fit into her pack is calculated below:

volume = 2 × 3 × 4 = 24 ft3
8 0
4 years ago
10,14,16,18,20 plz I don't understand
joja [24]
10. b - 16.6 = -3.7.....add 16.6 to both sides
      b - 16.6 + 16.6 = -3.7 + 16.6
      b = -3.7 + 16.6
      b = 12.9

14. 18.91 = -7.9 + x.....add 7.9 to both sides
      18.91 + 7.9 = -7.9 + 7.9 + x
      26.81 = x

16. 295.8997 = -10.1k....divide both sides by -10.1
      295.8997 / -10.1 = (-10.1/-10.1)k
     - 29.297 = k

18. -94.4724 = 3.3x....divide both sides by 3.3
      - 94.4724 / 3.3 = (3.3 / 3.3)x
      - 28.628 = x

20. -29.4x = -148.764...divide both sides by -29.4
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7 0
3 years ago
Whats the area?<br><br><br> Please help!!!
nadezda [96]

Answer:

$520.96

Step-by-step explanation:

The composite is made up of 2 semicircles and a rectangle:

⇒ Radius of the circle = 2 ft

⇒ Length of the rectangle = 5 ft

⇒ Width of the rectangle = 4 ft

Area

⇒ π(2)² + (5 x 4)

⇒ 4π + 20

⇒ 32.56 ft²

Cost

= 32.56 x 16

= $520.96

7 0
3 years ago
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