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pentagon [3]
3 years ago
7

Explanation please how to do it

Mathematics
1 answer:
Hitman42 [59]3 years ago
6 0

Answer:

I can't see the whole problem but if it says how many times per week does he practice it would be 13 times

Step-by-step explanation:

9 3/4 divided by 3/4.

39/4 times 4/3=13

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Which system of equations has no sulotion?
alex41 [277]

<em>Answer:</em>

Here is the answer ...... Check out it

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

<em>An inconsistent system of equations is a system of equations with no solution. We can determine if our system is inconsistent in three ways: graphing, algebra, and logic. Graphs of an inconsistent system will have no points of intersection.</em>

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5 0
3 years ago
If a 10 symbol sequence is sent through the channel,what is the probability that up to 3 symbols are in error out of the 10trans
lina2011 [118]

Answer: 0.171887

Step-by-step explanation:

Given that S0 and S1 are binary symbol of equal probabilty;

P(S0) = P(S1) = 0.5

This probability is a Binomial random variable of sequence Sn, where Sn counting the number of success in a repeated trials.

P(Sn =X) = nCx p^x (1-p)^(n-1)

Pr(at most 3) = P(0<= x <=3) = P(X=0) + 0) + P(X=1) + P(X=2) + P(X=3)

Since there are only 2 values that occur in sequence 0 and 1 ( or S0 and S1).Let the distribution be given by the sequence (0111111111),(1011111111),(11011111111),...(1111111110) for Sn= 1 is the sequence for 1 error.

10C0, 10C1, 10C2, and 10C3 is the number of sequences in value for X= 0, 1, 2, 3 having value 0 and others are 1. Let the success be p(S0)=0.5 and p(S1)= 0.5

P(0<= X <=3) = 10C0 × (0.5)^0 × (0.5)^10 + 10C1× (0.5)¹ × (0.5)^9 + 10C2 × (0.5)² × (0.5)^8 + 10C3(0.5)³(0.5)^7

= 1 × (0.5)^10 + 10 × (0.5)^10 + 45 × (0.5)^10 + 120 × (0.5)^10

=0.000977 + 0.00977 + 0.04395 + 0.11719

= 0.171887

3 0
3 years ago
Which expression is equivalent to this expression?
Lyrx [107]

Answer:

a-4b

Step-by-step explanation:

you combine like terms,  (-6b)+2b=-4

4a-3a=1a or just a

then you get your awsner a-4

5 0
3 years ago
Let x be a positive number such that the distance between x and -3.8 on a number line is exactly 2 times the distance between x
anyanavicka [17]

Answer:

x = 7.2

Step-by-step explanation:

Let x be a positive number such that the distance between x and -3.8 on a number line is exactly 2 times the distance between x and 1.7.

Now. the distance between - 3.8 and x will be (x + 3.8) and the distance between x and 1.7 will be (x - 1.7) {Since x is a positive number}

(Assuming x is greater than 1.7}

Given that, x + 3.8 = 2(x - 1.7)

⇒ x + 3.8 = 2x - 3.4

⇒ x = 7.2 (Answer)

3 0
3 years ago
I will mark you and plz help me!!
earnstyle [38]

Answer:

x                f(x)

-9               9

-6               4

-3               -1

0                 -6

Step-by-step explanation:

8 0
3 years ago
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