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larisa86 [58]
3 years ago
13

Chanita wants to swim the 21-mile English Channel in 48 hours. On the first day she swam 9 miles and then was picked up by a fer

ry to spend the night. The next day, she has 12 hours of daylight to complete the remaining distance. What inequality represents the minimum rate she has to swim on the second day to complete the distance? the inequality is 9 +
Mathematics
1 answer:
labwork [276]3 years ago
4 0

The inequality 12x+9 ≥ 21  represents the minimum rate Chanita have to swim on second day to complete the distance.

Step-by-step explanation:

Given,

Length of English Channel = 21 miles

Distance covered on first day = 9 miles

Time to complete remaining distance on second day = 12 hours

Let,

x be the distance covered per hour on second day.

Time to cover distance * Distance covered per hour + Distance on first day ≥ Total distance

12x+9 ≥ 21

The inequality 12x+9 ≥ 21  represents the minimum rate Chanita have to swim on second day to complete the distance.

Keywords: addition, inequality

Learn more about addition at:

  • brainly.com/question/8520610
  • brainly.com/question/846474

#LearnwithBrainly

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Researchers recorded that a group of
irakobra [83]

Answer:

The number of bacteria grown in 35 hours is 15771

Step-by-step explanation:

It is given that,

Researchers recorded that a group of bacteria grew from 100 to 7,000 in 14 hours.

Therefore, the bacteria has grown from 100 to 7000 in 14 hours.

To calculate number of bacteria grown in 14 hours :

⇒ 7000 - 100 = 6900

6900 bacteria grows in 14 hours. We need to find out the growth of bacteria in 1 hour in order to calculate its growth in 32 hours.

To calculate number of bacteria grown in 1 hour :

⇒ Total bacteria growth in 14 hours / 14

⇒ 6900 / 14

⇒ 492.85

To calculate number of bacteria grown in 32 hours :

⇒ 492.85 × 32

⇒ 15771.2

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Hope this answer helps you :)

Have a great day

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8 0
3 years ago
5/6 - 2/3 divide by 4/5
ollegr [7]

Answer:

5/24

Step-by-step explanation:

Start with the first part of the probelm 5/6 - 2/3

You need to find a common denominator of 6 and 3

common denominator= 6

so change 2/3 to 4/6

now you can subtract the top values

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5-6=1

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Now divide 1/6  by 4/5

to divide you are going to multiply by the reciprocal so instead of 4/5 we are going to flip it to 5/4

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5x1=5 and 6x4=24

= 5/24

8 0
2 years ago
Write 57% as a ratio
Feliz [49]
It’d be 0.57, hope this helps.
4 0
3 years ago
Read 2 more answers
A circle has a CIRCUMFERENCE of 6.<br><br> What is it's DIAMETER?<br><br> thank you!
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C = pi * d
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On a coordinate map of the school cultural festival, the information booth is located at (4,5). The ticket booth is located 4 un
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B.

Step-by-step explanation:

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