Answer: 7(5v-w+6x)
Step-by-step explanation:
GCD/HCF = 7
Twice a number decreased by the cube of the same number
Answer:
2x-x^3
Step-by-step explanation:
It is x^3 because the question is asking for cube so don't use a root.
Answer:
a^2b^2 + 6ab + 9
�� 20 + 33x �� 40 - 33x
Answer:20-33x
Step-by-step explanation:
B. 13.9
C. 3.9
D. 2.0
Answer:
D. 2.0 is the right answer
Step-by-step explanation:
Note: All decimals were converted to fractions.
The standard deviation of the given distribution is:
σ=1.965
Answer:
1.96
Step-by-step explanation:
Solution:-
- We will use the table given to determine the standard deviation of random variable x. From descriptive statistics we have the following formula for standard deviation (s.d) :
s.d (x) = sqrt ( Var(x) )
- The formula for Variance ( Var (x) ) is also taken from descriptive statistics as follows:
- Where,
- So the variance is:
Var ( X ) = 13.91 - 10.0489 = 3.8611
s.d (x) = √3.8611 = 1.96