MATHEMATICS COLLEGE

Find the probability. One digit from the number 3,151,221 is written on each of seven cards. What is the probability of drawing a card that shows 3, 1, or 5?a. 2/7
b. 5/7
c. 3/7
d. 4/7

Answers

Answer 1
Answer: Answer is B
5 out of the 7 cards would have a 1,3, or 5
Therefore 5/7 probability of pulling one of those cards

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How many solutions does this system have? -x + 2y = 16 4x - 8y = -64​
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Pls help me pls pls il need help i will mark brainliest
Which statement describes this system of equations?9x – 6y = 15, 3x – 2y = 5
Find the rectangular coordinates of the point ( -3, 1/2 π)

Records show that the average number of phone calls received per day is 9.2. Find the probability of between 2 and 4 phone calls received (endpoints included) in a given day.

Answers

Answer:

4.76% probability of between 2 and 4 phone calls received (endpoints included) in a given day.

Step-by-step explanation:

In a Poisson distribution, the probability that X represents the number of successes of a random variable is given by the following formula:

P(X = x) = (e^(-\mu)*\mu^(x))/((x)!)

In which

x is the number of sucesses

e = 2.71828 is the Euler number

\mu is the mean in the given interval.

Records show that the average number of phone calls received per day is 9.2.

This means that \mu = 9.2.

Find the probability of between 2 and 4 phone calls received (endpoints included) in a given day.

(2 \leq X \leq 4) = P(X = 2) + P(X = 3) + P(X = 4)

P(X = x) = (e^(-\mu)*\mu^(x))/((x)!)

P(X = 2) = (e^(-9.2)*(9.2)^(2))/((2)!) = 0.0043

P(X = 3) = (e^(-9.2)*(9.2)^(3))/((3)!) = 0.0131

P(X = 4) = (e^(-9.2)*(9.2)^(4))/((4)!) = 0.0302

(2 \leq X \leq 4) = P(X = 2) + P(X = 3) + P(X = 4) = 0.0043 + 0.0131 + 0.0302 = 0.0476

4.76% probability of between 2 and 4 phone calls received (endpoints included) in a given day.

A soccer player scored 12 goals this season. He scored 30% of the goals for his team this season. How many goals did the entire team score this season?

Answers

Answer:

40 goalas

Step-by-step explanation:

30% x ? = 12

12/30% =

12/(30/100) =

(100 x 12)/30 =

1,200/30 =

40

Below, the two-way table is given for a class of students. Freshmon Sophomora fontores Seniors Male 4 6 2 2 Female 3 4 6 б 3 Total If a student is selected at random, find the probability the student is a junior. Round to the nearest whole percent.​

Answers

Answer:

22% probability the student is a junior.

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes:

The table says that:

There are 4 + 6 + 2 + 2 + 3 + 4 + 6 + 6 + 3 = 36 total students.

2 + 6 = 8 are juniors.

If a student is selected at random, find the probability the student is a junior.

8/36 = 0.2222 = 22.22%

Rounding to the nearest whole percent, 22% probability the student is a junior.

Answer:

27%

Step-by-step explanation:

HELP!How do you derive the equation of a circle?
How do you identify the center and radius of a circle?
How do you define the radian measure of an angle?
How are arc length and area of a sector related to proportionality?

Answers

Answer:

How do you derive the equation of a circle?

you can reverse the circle formula

How do you identify the center and radius of a circle?

You can identify the center because it is the middle of the circle and the radius can be draw from the center to the round part.

How do you define the radian measure of an angle?

it is the ratio of the length of the arc the angle forms÷the radius of the circle

How are arc length and area of a sector related to proportionality?

sector x radian

area = (r^2 x)/2

arc length = r x

they are not propotional

because Area / arc length = r/2 , (it's not a constant)

High Hopes

Barrii

Which of the following equations are the correct answer? Please help due tomorrow

Answers

(3,2), (-1,-4)

Slope = (y2-y1)/(x2-x1)= (2+4)/(3+1) =3/2
(y-y1) = 3/2(x-x1)
(y-2)=3/2(x-3)
(y+4)=3/2(x+1)
Correct answer: A,E

I will give you brainles I promise please help me

Answers

Answer:

1)64

2)75

Step-by-step explanation:

Let the number be x

1)According to the question

50%×x=32

½×x=32

x=32×2

x=64

Let the number be y

2) according to the question

10%×y=7.5

⅒×y=7.5

y=7.5×10

y=75
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