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Andre45 [30]
3 years ago
7

What is the value of x? ​

Mathematics
1 answer:
ohaa [14]3 years ago
5 0

Answer:

x= 25

Step-by-step explanation:

a²+b²=c²

24²+7²=c²

576+49= 625

√625= 25

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Which fraction is closest to zero? 8/12, 5/8, 6/10, 2/3
konstantin123 [22]
6/10 is the closest to zero because if you simplify all the fractions you can, then convert them into decimals, you can easily find what is closer to zero:

8/12 = 2/3 = 0.66
5/8 = 0.62
6/10 = 3/5 = 0.60
2/3 = 0.66

0.60 or 6/10 is the smaller number ;))
5 0
3 years ago
Read 2 more answers
Need help with stats!
KIM [24]

Answer:

A. a) 24

A. b) 4

B. a) 40320

B. b) 576

Step-by-step explanation:

General formula for Permutations:

P(n,r) = \frac{n!}{(n - r)!}

A. Concert seats:  2 couple --- total of 4 persons.

a) without restrictions

Since there are no restrictions, but that the order is important (John, Mary, Paul, Michelle isn't the  same as Michelle, Mary, Paul, John), it's a permutation calculation.

Then we calculate the permutations of 4, out of 4, so...

P(4,4) = \frac{4!}{(4 - 4)!} = 4! = 24

24 different ways for them to sit.

b) couples together

Now, we can see the problem as having 2 levels of permutations, first the couples, then inside the couples.

There are 2 ways for the first level or order... couples AB or BA, so 2 possibilities.

Inside each couple, man then woman (MW) or woman then man (WM), so 2 possibilities there too on 2nd level.

Overall 2 * 2 = 4 ways to sit by couple.

B) Single file

a) without restrictions

Again, order is important, so another permutation, not a combination.  And since we have no restriction, it can be any sequence.

We then have to calculate the number of permutations of 8 out of 8...

P(8,8) = \frac{8!}{(8 - 8)!} = 8! = 40320

There are 40,320 ways these 8 kids can pass the door.

b) girls first.

So, the four girls have to enter first.... and these four girls can be in any order.. how many permutations? P(4,4)... so 24 as calculated above.

For the four boys, how many permutations?  Yes, again P(4,4)... so 24 again.

Overall, we need to multiply the two... 24 x 24 = 576 ways if the girls enter first, followed by the boys.

8 0
3 years ago
A bag contains 4 types of coins. - 2 Pennies - 2 Nickels - 2 Dimes - 4 Quarters A coin will be randomly selected from the bag. W
Viefleur [7K]

Answer:

0.4

Step-by-step explanation:

possible outcomes = 2+2+2+4=10

favourable = 4

4/10 = 2/5

2/5 = 0.4

7 0
3 years ago
18. Which of the following is true for a circle that has a circumference of approximately 75 feet?
anyanavicka [17]

Answer:

A) The diameter is approximately 12 feet.

Step-by-step explanation:

C= piD

sq ft would be wrong bc this is not talking ab area

6 0
3 years ago
The identifying letter at the top of a column is called the
Papessa [141]
Can you give more information on your question? 
8 0
3 years ago
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