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steposvetlana [31]
3 years ago
8

A box contains 3 red and 4 green marbles. If 5 marbles are drawn without replacement, what is the expected number of red marbles

Mathematics
1 answer:
blsea [12.9K]3 years ago
4 0

Answer:

i hope this helps i believe it is 1/3

2 is

Step-by-step explanation:

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For which of these research situations would linear regression be the best statistical test to perform?
rjkz [21]

Answer:

C) independent variable = age

dependent variable = reaction time in milliseconds

Step-by-step explanation:

The linear regression statistical test is best used for research experiment where there is a single dependent and one independent variable whjre both variables are numeric. In the given options above, the city of residence, gender, college major and political affiliation are all possible categorical variables and age, salary, miles driven and reaction time are all numerical variables. Hence, the best situation in which to use linear regression is a test where both the independent and dependent variables are either age, salary, reaction time or miles driven.

7 0
3 years ago
For each of the following angles, name the angle that is congruent.
dexar [7]

Answer:

M is congruent to P, N is congruent to Q, and O is congruent to R.

Step-by-step explanation:

Congruent angles are angles with exactly the same measure.

4 0
2 years ago
I need help really badly
IrinaVladis [17]
A)40% 0f 140 = (4/10)*140=56

b) dicount=12.5% 0f 240 = (12.5/100)*240=30
   so, u pay (240-30)= 210
5 0
2 years ago
Read 2 more answers
Find f(-5) if f(n) = n3 + 3n2
KATRIN_1 [288]
The answer is -50  because -5 squared is 25 and that times 3 is 75 -5 cubed is  -150 and -150 + 75 is 50     

5 0
3 years ago
Find the length x It would help me so much thanks
sergij07 [2.7K]

Answer:

x = 7

Step-by-step explanation:

\frac{x}{6}  =  \frac{3.5}{3}

3x = 21

x = 7

7 0
3 years ago
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