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olga55 [171]
3 years ago
5

Erik is performing a marble experiment in math class. His teacher places an equal number of black, red, and white marbles in a b

ag. Then, Erik randomly takes out a marble, records the result, and puts the marble back in the bag. Each of the first four times Erik takes out a marble, he gets a black marble. A. What is the theoretical probability of Erik picking a black marble next time
Mathematics
1 answer:
olganol [36]3 years ago
5 0

Answer:

1/3

Step-by-step explanation:

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Least common multiple of 30 25 4
White raven [17]

Answer:

The least common multiple of 30, 25, 4 is 150.

Step-by-step explanation:

The given numbers are 30, 25 and 4.

The factors of given numbers are

30=2\times 3\times 5

30=5\times 5

4=2\times 2

The L.C.M of given numbers is a smallest number that divides the given numbers completely.

L.C.M.=\frac{2\times 3\times 5\times 5\times 5\times 2\times 2}{5\times 2}

L.C.M.=2\times 3\times 5\times 5\times 2=150

Therefore the least common multiple of 30, 25, 4 is 150.

5 0
4 years ago
30 POINTS!!!!! PLEASE HELP
Hoochie [10]

Answer:

a) For a constant increment in x-variable, there is a constant increment in y-variable, for example, for x = 0 to x = 0.5 (increment = 0.5) y-variable goes from 60 to 62 (increment = 2); the same is valid for any couple of (x,y) values. This behaviour is characteristic of linear equations.

b) slope:

m = (increment in y-variable)/(increment in x-variable) = 2/0.5 = 4

y-intercept:

y1 = m*x1 + h

60 = 4*0 + h

60 = h

equation: y = 4x + 60

where y represents scores and x represents hours spent studying

c) The slope indicates that you need to study 1 hour to increase your score in 4 points

The y-intercept indicates that you will get at least a score of 60, even though you hadn't studied

3 0
3 years ago
Find the distance between 2 and -2.<br>A) -6<br>B) -4<br>C) 0<br>D) 4​
ioda

Answer:

4

Step-by-step explanation:

We can do this problem by doing the absolute value of the difference between 2 and -2.

2-(-2)=4. Absolute value of 4 is 4.

Hope this helped.

~cloud

6 0
3 years ago
Read 2 more answers
What id 2756 divided by 53
Marina CMI [18]
52 (if id means is and not imaginary number)
5 0
3 years ago
Read 2 more answers
There are two spheres of different sizes. The large sphere has a radius 3 times the size of the small sphere. How many times lar
Vikentia [17]

Answer:

The answer to your question is the letter B. 27

Step-by-step explanation:

Data

The Radius of large sphere = 3 times the size of the radius small sphere.

The Ratio of Volume = ?

Formula

Volume of a sphere = 4/3 πr³

Process

1.- Calculate the volume of the large sphere

                   Vl = 4/3 π(3r)³

2.- Calculate the volume of the small sphere

                   Vs = 4/3 πr³

3.- Calculate the ratio

                   Vl / Vs = [4/3π(3r³)] / [4/3 πr³]

- Simplification

                   Vl / Vs = 3³r³ / r³

                   Vl / Vs = 27

7 0
3 years ago
Read 2 more answers
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