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yawa3891 [41]
4 years ago
13

At first public inquiry showed there were 637000 women motorcyclists in the US up from 437000 just 8 years ago before it. Find t

he percent of increase in the number of women motorcyclists during these 8 years
Mathematics
1 answer:
dimaraw [331]4 years ago
6 0
I would say to do 637000-437000, which is 200000, and then do 200000/637000. You get 0.314, and the percentage of that in hundreds is 31%. 
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4 years ago
Rational or irrational
Law Incorporation [45]

Hello, I am papaguy Your answer is ready!


Answer: A rational number is any number that can be expressed as a whole number, a fraction, or as a non repeating decimal. Otherwise, it is an irrational number. 

19/5: it is a rational number because it is in fraction form

√12: this is an irrational number

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Mark Brainliest if your happy with my answer.


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7 0
4 years ago
Read 2 more answers
A battery was charged. When the changing began, it was 23 percent full. After 30 minutes of charging, the battery was 89 percent
Karo-lina-s [1.5K]
Attached the solution and work.

5 0
4 years ago
Marine scientists categorize signature whistles of bottlenose dolphins by typelong dash—type ​a, type​ b, type​ c, etc. In one s
r-ruslan [8.4K]

Answer:

The 95​% confidence interval for the true proportion of bottlenose dolphin signature whistles that are type a whistles is (0.4687, 0.6123).

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

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n = 185, \pi = \frac{100}{185} = 0.5405

95% confidence level

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The lower limit of this interval is:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.5405 - 1.96\sqrt{\frac{0.5405*0.4595}{185}} = 0.4687

The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.5405 + 1.96\sqrt{\frac{0.5405*0.4595}{185}} = 0.6123

The 95​% confidence interval for the true proportion of bottlenose dolphin signature whistles that are type a whistles is (0.4687, 0.6123).

3 0
3 years ago
Can you write a real world problem that uses Pythagorean theorem ?
elena-14-01-66 [18.8K]

1) Road Trip: Let’s say two friends are meeting at a playground. Mary is already at the park but her friend Bob needs to get there taking the shortest path possible. Bob has two way he can go - he can follow the roads getting to the park - first heading south 3 miles, then heading west four miles. The total distance covered following the roads will be 7 miles. The other way he can get there is by cutting through some open fields and walk directly to the park. If we apply Pythagoras's theorem to calculate the distance you will get:

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(5)<span>2 </span>+ (2)2 =

25 + 4 = C2

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5.3 m. = C

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324 + b2 = 900

B2 = 900 – 324

b= √576

= 24 inches

6 0
3 years ago
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