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Paraphin [41]
3 years ago
9

HELP ME PLEASE BRAINLIEST ANSWER PLEASE HELP ME

Mathematics
1 answer:
avanturin [10]3 years ago
8 0

Answer:

alright hers your brainliest and thank you very much i  really appreciate it

Step-by-step explanation:

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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
sesenic [268]

Answer:the minimum rate is 1 mile per hour.

Step-by-step explanation:

Chanita wants to swim the 21-mile English Channel in 48 hours. Total number of miles that she covered on the first day is 9 miles. Total distance left for her to cover would be

21 - 9 =12 miles.

The next day, she has 12 hours of daylight to complete the remaining distance. Let x represent the minimum rate she has to swim on the second day to complete the distance.

Speed = distance/time

Therefore,

x ≥ 12/12

x ≥ 1

8 0
3 years ago
Use mathematical induction to prove that for each integer n > 4,5" > 2^2n+1 + 100.
Flura [38]

Answer:

The inequality that you have is 5^{n}>2^{2n+1}+100,\,n>4. You can use mathematical induction as follows:

Step-by-step explanation:

For n=5 we have:

5^{5}=3125

2^{(2(5)+1)}+100=2148

Hence, we have that 5^{5}>2^{(2(5)+1)}+100.

Now suppose that the inequality holds for n=k and let's proof that the same holds for n=k+1. In fact,

5^{k+1}=5^{k}\cdot 5>(2^{2k+1}+100)\cdot 5.

Where the last inequality holds by the induction hypothesis.Then,

5^{k+1}>(2^{2k+1}+100)\cdot (4+1)

5^{k+1}>2^{2k+1}\cdot 4+100\cdot 4+2^{2k+1}+100

5^{k+1}>2^{2k+3}+100\cdot 4

5^{k+1}>2^{2(k+1)+1}+100

Then, the inequality is True whenever n>4.

3 0
3 years ago
Select True or False for each statement.
katovenus [111]

Answer:

1. True 2. True

Step-by-step explanation:

1. all horizontal lines represent a function.

2. The equation y=2x+1 represents a function.

8 0
3 years ago
Read 2 more answers
What is the name of the relationship between ∠3 ​ and ∠7?
lara31 [8.8K]

answer is B) Corresponding angles

6 0
2 years ago
Read 2 more answers
A skier is trying to decide whether or not to buy a season ski pass. A daily pass costs ​$70. A season ski pass costs ​$300. The
MatroZZZ [7]

The number of days when the season pass would be less expensive than the daily pass is 5 days.

<h3>How many days would the season pass be less expensive?</h3>

The equation that represents the total cost of skiing with the daily pass : (daily pass x number of days) + (cost of renting skis x number of days)

$70d + $20d = $90d

The equation that represents the total cost of skiing with the seasonal pass : cost of season pass + (cost of renting skis x number of days)

$300 + $20d

When the season pass becomes less expensive, the inequality equation is:

Daily pass > season pass

$90d > $300 + $20d

In order to determine the value of d, take the following steps:

Combine and add similar terms: $90d - $20d > $300

70d > $300

Divide both sides by 70 d > $300 / 70

d > 4.3 days

Approximately 5 days.

To learn more about how to calculate inequality, please check: brainly.com/question/13306871

#SPJ1

5 0
1 year ago
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