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Tema [17]
3 years ago
7

Yx÷ 2; use x =7 , and y=2

Mathematics
1 answer:
Zepler [3.9K]3 years ago
7 0
Y(2)x(7)÷2
14 ÷2=7 I think
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A total of 4 buses carrying 148 students from the same school arrive at a football stadium. The buses carry, respectively, 40, 3
Mandarinka [93]

Answer:

76.2838

Step-by-step explanation:

E[X+Y] = E[X] + E[Y]

E[X] is the average of X  or expectancy of X

E[Y] is the average or expectancy f Y

E[X] = 40P(student is in bus 1)+33P(student is in bus 2)+25P(student is in bus 3)+50P(student is in bus 4)=

40(40/148) + 33(33/148) + 25(25/148) + 50(50/148) = 39.2838

E[Y] = (number of students)/(number of drivers) = 148/4 = 37

So E[X+Y] = 39.2838 + 37 = 76.2838

6 0
4 years ago
Michelle kicks a soccer ball up into the air from the ground. The graph represents the height of the ball, in feet, as a functio
lyudmila [28]

Answer:

D 6 seconds

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Blake and two friends equally shared the cups of water shown in the picture.
3241004551 [841]
The answer would be c- 2/6

there are six cups total and three (blake plus two others) friends

there are two ways you can solve this…

1. by making groups
if you look at the picture, you can split it into three groups because that is the number of people, then count how many cups there are in one group which will be your numerator for the denominator six which is the total

2. simple division
divide the total number of cups buy the number of people which is 3
you get two and follow the same process above

6 0
3 years ago
The total price of a shirt and a cap is $11. If the price of the shirt was doubled and the price of the cap was three times its
Oliga [24]

Answer:

shirt= $8

cap=$3

Step-by-step explanation:

rearrange one of the equations

y=11-x

then plug into the other equation

2x+3(11-x)=25

solve

2x+33-3x=25

-x+33=25

subtract 33 from both sides

-x=-8

divide by -1

x=8

the put that answer into original equation

8+y=11

subtract 8 from both sides

y=3

8 0
4 years ago
lysha is at a local library with her best friend. they've noticed a lot of cute boys in the library, and alysha bets that of the
Annette [7]

Using the binomial distribution, there is a 0.1201 = 12.01% probability that Alysha will win the bet.

<h3>What is the binomial distribution formula?</h3>

The formula is:

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

C_{n,x} = \frac{n!}{x!(n-x)!}

The parameters are:

  • x is the number of successes.
  • n is the number of trials.
  • p is the probability of a success on a single trial.

For this problem, the parameters are given as follows:

n = 20, p = 0.5.

She wins the bet if there are 12 boys, hence the probability is P(X = 12), found as follows:

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 12) = C_{20,12}.(0.5)^{12}.(0.5)^{8} = 0.1201

0.1201 = 12.01% probability that Alysha will win the bet.

More can be learned about the binomial distribution at brainly.com/question/24863377

#SPJ1

7 0
1 year ago
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