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lawyer [7]
3 years ago
7

What is 30% of 70? I am confused

Mathematics
2 answers:
BlackZzzverrR [31]3 years ago
7 0

Answer:

Its 21

Step-by-step explanation:

lubasha [3.4K]3 years ago
3 0

Answer:

21

Step-by-step explanation:

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The ages of armadillos are normally distributed, with a mean of 14 years and a standard deviation of 1.2. Approximately what per
vovangra [49]

Answer:

Percentage of armadillos between 13 and 17 years = 79.052%f using Standard Normal Distribution Tables

Step-by-step explanation:

As we know from normal distribution: z(x) = (x - Mu)/SD

where x = targeted value; Mu = Mean of Normal Distribution; SD = Standard Deviation of Normal Distribution

Therefore using given data: Mu = 14, SD = 1.2 we have z(x) by using z(x) = (x - Mu)/SD as under:

Approach 1 using Standard Normal Distribution Table:

z for x=17: z(17) = (17-14)/1.2 gives us z(17) = 2.5

z for x=13: z(13) = (13-14)/1.2 gives us z(13) = -0.83

Afterwards using Normal Distribution Tables we find the probabilities as under:

P(17) using z(17) = 2.5 gives us P(17) = 99.379%

Similarly we have:

P(13) using z(13) = -0.83 gives us P(13) = 20.327%

Finally in order to find out the probability between 17 & 13 years we have:

Percentage of armadillos between 13 and 17 years = P(17) - P(13) = 99.379% - 20.327% = 79.052%

The standard normal distribution table is being attached for yours easiness.

Approach 2 using Excel or Google Sheets:

P(17) = norm.dist(17,14,1.2,1)

P(13) = norm.dist(13,14,1.2,1)

Percentage of armadillos between 13 and 17 years = { P(17) - P(13) } * 100

Download pdf
4 0
3 years ago
Read 2 more answers
Plss help mee answer my homework plss im begging u
vagabundo [1.1K]

Answer:

1.80 2.90 3. 135

Step-by-step explanation:

1. 80°

2. 90°

3. 135°

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An amusement park charges $25 to enter plus $2 per ride ticket. Which graph models the cost of a visit to this park?
KonstantinChe [14]

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Graph B

Step-by-step explanation:

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2 years ago
What is 35 percent of 135
Natalka [10]
<h2>Answer:</h2><h2>47.25</h2><h2 /><h2>Hope this helps!!</h2>
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2 years ago
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When the input x, is -5 K=6x+100
yanalaym [24]

Answer:

the answer is 70

Step-by-step explanation:

just do 6(-5)+100=70

hope this helps

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3 years ago
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