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vova2212 [387]
3 years ago
13

Write a number with the digit 8 in the tens place

Mathematics
2 answers:
Anon25 [30]3 years ago
8 0

80 because tens place is two over from the right

RSB [31]3 years ago
4 0

683 it just says and 8 in the tens

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There are 50 runners in a race. How many ways can the runners finish first, second, and third?
Dmitrij [34]

Number of ways can the runners finish first, second, and third is 1,17,600 .

<u>Step-by-step explanation:</u>

Permutation is the act of arranging the members of a set into a sequence or order, or, if the set is already ordered, rearranging (reordering) its elements—a process called permuting. For example, written as tuples, there are six permutations of the set {1,2,3}, namely: (1,2,3), (1,3,2), (2,1,3), (2,3,1), (3,1,2), and (3,2,1). Formula of Permutation is : P(n,r) = \frac{n!}{(n-r)!} where n is the number of things to choose from,  and we choose r of them,  no repetitions,  order matters. Here , n = 50 , r= 3

⇒ P(n,r) = \frac{n!}{(n-r)!}

⇒ P(50,3) = \frac{50!}{(50-3)!} = \frac{50(49)(48)47!}{47!}

⇒ P(50,3) = 50(49)(48)

⇒ P(50,3) = 1,17,600

∴ Number of ways can the runners finish first, second, and third is 1,17,600 .

8 0
3 years ago
What is the answer 6²÷2(3) +4
timama [110]
6²÷2(3) +4

36/2(3)+4

=(18)(3)+4

=54+4

=58




5 0
3 years ago
The current of a river is 3 miles per hour. A boat travels to a point 176 miles upstream and 176 miles back in 19 hours. What is
serious [3.7K]

Answer:

If I am understanding your question, the total upstream is 8 miles and another 8 miles downstream.

Let s = the speed of the boat in still water

d = rt

8 = 5(s + 3)  downstream

8 = 5s + 15  equation 1

8 = 5(s - 3)   upstream

8 = 5s - 15    Add equation 1

8 = 5s + 15 

16 = 10s    Divide both sides by 10.

s = 16/10 = 8/5 = 1.6 mph

 

4 0
2 years ago
Please help. The question is in the pictures. Thanks :)
mylen [45]

Answer:

Scalene

Step-by-step explanation:

Scalene triangles always have unequal side lengths. Thia triangle has unequal side lengths, therefore it is considered scalene.

8 0
3 years ago
Which expression is equivalent to (01.05 LC) 3 to the 2 power 3 to the -5 power
9966 [12]

Answer:

Step-by-step explanation:

It when you do this tan that equals 4:12

5 0
3 years ago
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