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Pie
3 years ago
11

A bag has 1 red marble, 4 blue marbles, and 3 green marbles, Peter draws a marble randomly from the bag, replaces it, and then d

raws another marble randomly
What is the probability of drawing 2 blue marbles in a row? Explain your answer
Mathematics
1 answer:
damaskus [11]3 years ago
3 0

Answer:

1/4

Step-by-step explanation:

There is a total of 1+4+3 marbles = 8 marbles

P( blue ) = blue /total = 4/8 = 1/2

He replaces it

There are still 8 marbles in the bag

P(blue 2nd draw) =  blue /total = 4/8 = 1/2

P(blue,replace, blue) = 1/2*1/2 = 1/4

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The students in Ms. Shen’s class are making decoupage boxes. Each box has 6 sides that can be covered by images. There are 20 st
mrs_skeptik [129]
3 because 20/6=3.3333333333 so you would have 3 because you can split the pictures
3 0
4 years ago
how do the graphs of f(x) = sin x and g(x) = sin2x+3 compare. Must make two selections of the following that apply.
Elena L [17]

Answer:

The correct options are:

  • g(x) is shifted three units higher than f(x).
  • g(x) has a period that is half the period of  f(x).

Step-by-step explanation:

We have to compare the graphs of the function:

f(x)=\sin x

and g(x)=\sin 2x+3

We have to select the correct options among the following:

As we know that the period of sine function is 2π.

i.e. Period of function f(x) is: 2π.

The period of sin(2 x) is π.

Hence, the period of the function g(x) function is π.

  • Hence, the period of g(x) is half the period of f(x).
  • Also we could observe that g(x) is shifted 3 units upward.

3 0
3 years ago
Read 2 more answers
Need some help on this. any help is appreciated :) !!
kirza4 [7]

If we think about a normal curve / bell curve and the 68-95-99.7 rule, we know that the majority of data will lie within 1, 2, or 3 standard deviations from the mean. The mean is in the center of the curve, and to each side of the mean, 34% of the data lies 1 standard deviation on either side of the mean. Therefore, we need to add and subtract one standard deviation from the mean.

85 + 12 = 97

85 - 12 = 73

Correct Answer: B. 73 - 97

Hope this helps!! :)

7 0
3 years ago
There are a total of 64 students in a drama club and a yearbook club. The drama club has 10 more students than the yearbook club
g100num [7]
Given:
64 total students
x = drama club students
y = yearbook club students

x = y + 10
y = 64 - x

y = 64 - x
y = 64 - (y + 10)
y = 64 - y - 10
y + y = 64 - 10
2y = 54
2y/2 = 54/2
y = 27

x = y + 10
x = 27 + 10
x = 37 

To check:

x + y = 64
37 + 27 = 64
64 = 64

8 0
4 years ago
Note: Enter your answer and show all the steps that you use to solve this problem in the space provided.
irakobra [83]

Answer:

a-9=20

a=20+9

a=29

b-9>20

b>29

6 0
3 years ago
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