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sladkih [1.3K]
3 years ago
15

A culture started with 1,000 bacteria. After 6 hours it grew to 1,100 bacteria. Predict how many bacteria will be present after

15 hours. Round your answer to the nearest whole number
Mathematics
1 answer:
andrew11 [14]3 years ago
4 0
Total bacteria would be 1350
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Graph the image of triangle PQR after a reflection across the line y = 2​
ololo11 [35]

Answer: Refer to the diagram below

  • P ' is at (-7, 9)
  • Q ' is at (1, 9)
  • R ' is at (-6, 4)

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Explanation:

The diagram shows how point R moves to R'. We move up 2 units going from R(-6,0) to (-6,2). This lands us on the line of reflection. Then we move another 2 units up to land on (-6,4) which is the location of point R'.

The other points P and Q follow the same idea. Though the distances will be different from R. For P and Q, we'll move 7 units up to arrive at the line of reflection, then another 7 units to arrive at the proper locations of P' and Q', which are (-7,9) and (1,9) respectively.

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3 years ago
Please help urgently i am not sure what to do
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Step-by-step explanation:

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At a local preschool, there is a ratio of 3 boys to every 4 girls. If there are 245 total preschoolers enrolled, then how many a
Reika [66]

Set up the equation by writing the number of students in the ratio as a fraction:

3/4= (245-x)/x Cross multiply:

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2 years ago
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In a café, I order a cup of tea and a piece of cake and it costs £1.10. The next time I order 2 cups of tea and one piece of cak
defon

Answer:

£0.50

Step-by-step explanation:

t = one cup of tea

c = one piece of cake

t + c = £1.10

2t + c = £1.70

the cost increases by £0.60 (£1.70 - £1.10) when you order one more cup of tea which means that one cup of tea costs £0.60

substitute £0.60 into t + c = £1.10

£0.60 + c = £1.10

rearrange to get c = £1.10 - £0.60 = £0.50

so one piece of cake costs £0.50

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