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nata0808 [166]
2 years ago
8

Find the cardinal number of the given set. A = {{3, 5, 7, ... 25}}

Mathematics
1 answer:
Allisa [31]2 years ago
7 0

Answer:

<h3>12</h3>

Step-by-step explanation:

The cardinal number of a set is the number of element in the set. Given the set A = {{3, 5, 7, ... 25}}, you can see that the elements of the set are odd numbers from 3 to 25. Writing out the full set;

A = {{3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25}}

Counting the total number of element in the set, you will see that there are only 12 elements in the set. Hence the cardinal number of the set is 12 i.e n(A) = 12

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All this to say that LM must be half as long as AC, so LM has length (B) 14 cm.

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Step-by-step explanation:

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3 years ago
The lengths of pregnancies are normally distributed with a mean of 269269 days and a standard deviation of 1515 days. a. Find th
kati45 [8]

Answer:

a. 0.38%

b. 266.75 days

Step-by-step explanation:

We have the following data, mean (m) 269 and standard deviation (sd) 15, therefore:

a. The first thing is to calculate the number z:

z (x) = (x - m) / sd

z (309) = (309-269) / 15 = 2.67

When looking in the normal distribution table (attached), we have that at this value of z, the probability is:

P (z> 2.67), that is to say we must look in the table -2.67 and this value corresponds to 0.0038, that is to say 0.38%

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invNorm (0.44) = -0.15

Find the corresponding number of days:

x = z * sd + m

we replace

d = -0.15 * 15 + 269 = 266.75 days

7 0
3 years ago
Emma needs 2 pounds of ground meat to make a meatloaf.she has one package with 2.09 pounds of ground meat and another with 2.09
vladimir2022 [97]
Mma can see that 2.09 is closer to 2 than 2.36.
4 0
3 years ago
Help ASAp will give brainliest!!!!!!!
anzhelika [568]

Answer:

x = 51

Step-by-step explanation:

2x + 4 + x + 23 = 180

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3x = 153

x = 51

8 0
2 years ago
Read 2 more answers
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