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Rudik [331]
3 years ago
5

Lena swam 32 laps at the pool last week.She swam M,T,W,&F and swam an equal amount of laps each day. How many laps did she s

wim each day?
Mathematics
1 answer:
tatuchka [14]3 years ago
5 0

Answer:

8 laps a day

Step-by-step explanation:

if you go 32 laps divide that by the number of days (4) and it equals 8 laps in 1 day

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I’ll give brainliest <br> Completed a full explanation of statistics with explanation and examples ?
slamgirl [31]

Answer: Hope This Helps!

Step-by-step explanation:

Statistic Definition: A mathematical science concerned with data collection, presentation, analysis, and interpretation

Examples: "Statistics is the only mathematical field required for many social sciences." and "The statistics from the Census for apportionment are available."

3 0
3 years ago
The probability of rain on the last day of July is 95 % . If the probability remains constant for the first seven days of August
8090 [49]

The probability that it rains at most 2 days is 0.00005995233 and the variance is 0.516

<h3>The probability that it rains at most 2 days</h3>

The given parameters are:

  • Number of days, n = 7
  • Probability that it rains, p = 95%
  • Number of days it rains, x = 2 (at most)

The probability that it rains at most 2 days is represented as:

P(x ≤ 2) = P(0) + P(1) + P(2)

Each probability is calculated as:

P(x) = ^nC_x * p^x * (1 - p)^{n - x}

So, we have:

P(0) = ^7C_0 * (92\%)^0 * (1 - 92\%)^{7 - 0} = 0.00000002097

P(1) = ^7C_1 * (92\%)^1 * (1 - 92\%)^{7 - 1} = 0.00000168821

P(2) = ^7C_2 * (92\%)^2 * (1 - 92\%)^{7 - 2} = 0.00005824315

So, we have:

P(x ≤ 2) =0.00000002097 + 0.00000168821 + 0.00005824315

P(x ≤ 2) = 0.00005995233

Hence, the probability that it rains at most 2 days is 0.00005995233

<h3>The mean</h3>

This is calculated as:

Mean = np

So, we have:

Mean = 7 * 92%

Evaluate

Mean = 6.44

Hence, the mean is 6.44

<h3>The standard deviation</h3>

This is calculated as:

σ = √np(1 - p)

So, we have:

σ = √7 * 92%(1 - 92%)

Evaluate

σ = 0.718

Hence, the standard deviation is 0.718

<h3>The variance</h3>

We have:

σ = 0.718

Square both sides

σ² = 0.718²

Evaluate

σ² = 0.516

This represents the variance

Hence, the variance is 0.516

Read more about normal distribution at:

brainly.com/question/4079902

#SPJ1

7 0
2 years ago
1x+5=10 pls do it for me i'll give you brainly
STatiana [176]

1x+5=10

1x-5=10

x=5 that is the answer to the question hoped it helped.

4 0
3 years ago
Read 2 more answers
If a number is tripled , it give same result as 28 is added to it find the number
DiKsa [7]

Given :

If a number is tripled , it give same result as 28 is added to.

To Find :

We need to find that number.

Solution :

Let, the number is x.

Mathematical equation of the given scenario is :

3x = x + 28

3x - x - 28 = 0

2x - 28 = 0

x = 14

Therefore, the which give such result is 14.

5 0
3 years ago
Examine the time card for Jerry
Alina [70]

Answer:

55 hours 13 min

55.2166 hours

Step-by-step explanation:

mon - 3 hr 28 min + 3 hr 49 min = 6 hr 77 min --> 7 hr 17 min

tues -  4 hr 22 min + 4 hr 26 min = 8 hr 48 min

wed- 3 hr 39 min + 4 hr 49 min = 7 hr 88 min -->8 hr 28 min

thurs- 9 hr 51 min + 5 hr 30 min = 14 hr 81 min --> 15 hr 21 min

fri- 9 hr 46 min + 5 hr 33 min = 14 hr 79 min --> 15 hr 19 min

total --> 53 hours 133 min

55 hours 13 min

7 0
3 years ago
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