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Inessa05 [86]
2 years ago
9

Dominick iS training for a race. He spends 0.75 hours running each time he runs and 1.5 hours swimming each

Mathematics
1 answer:
Yuri [45]2 years ago
6 0

Answer:

htjyrjrjtuk6j556jj656

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A bicycle lock has a four-digit code. The possible digits, 0 What is the probability that the lock code will begin with
nika2105 [10]

Answer:

0.1-0.6

Step-by-step explanation:

First let's find the number of the elements in the sample space, that is the total number of codes that can be produced.

The first digit is any of {0, 1, 2...,9}, that is 10 possibilities

the second digit is any of the remaining 9, after having picked one. 

and so on...

so in total there are 10*9*8*7 = 5040 codes.

a. What is the probability that the lock code will begin with 5?

Lets fix the first number as 5. Then there are 9 possibilities for the second digit, 8 for the third on and 7 for the last digit.

Thus, there are 1*9*8*7=504 codes which start with 5.

so 

P(first digit is five)=

b. What is the probability that the lock code will not contain the number 0? 

from the set {0, 1, 2...., } we exclude 0, and we are left with {1, 2, ...9}

from which we can form in total 9*8*7*6 codes which do not contain 0.

P(codes without 0)=n(codes without 0)/n(all codes)=(9*8*7*6)/(10*9*8*7)=6/10=0.6

Answer:

0.1 ; 0.6

8 0
3 years ago
Read 2 more answers
PLEASE HELP
lions [1.4K]

Answer:

222

Step-by-step explanation:230-8

4 0
3 years ago
Please help!! best answer gets brainless ​
katen-ka-za [31]

Answer:

  33, 39, 45, 51

Step-by-step explanation:

The general term of an arithmetic sequence is given by the formula ...

  an = a1 + d(n-1) . . . where a1 is the first term and d is the common difference

Comparing this formula to the one you are given, you see that ...

  a1 = 33, d = 6

This means the first term is 33, and each successive term is 6 more than the previous one. The first 4 terms are ...

  33, 39, 45, 51

6 0
2 years ago
Is this a function please help!!!
Svetlanka [38]

Answer:

No

Step-by-step explanation:

There are two values for x=0

5 0
2 years ago
1/2(6x-5)=x-3/2 solve for x
Artyom0805 [142]

Answer:

1/2

Step-by-step explanation:

5 0
2 years ago
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