C is the answer, because 2 is prime.
Let w = total number of work
(1/3)(w) = 4
w/3 = 4
w = 4 • 3
w = 12
Answer:
when doing questions like these you need to do pemdas and do it in order
Step-by-step explanation:
p- parenthesis
e- exponents
m- multipication
d- division
a- adding
s- subtracting
Answer:
3.5 * 10^-12.
Step-by-step explanation:
(7 * 10^-5 ) * (5 * 10^-8)
= 35 * 10^-13
= 3.5 * 10^-12.
Note the first number must be between 1 and 10.
Answer:
9
Step-by-step explanation:
The mean squared error (MSE)of a set of observations can be calculated using the formula :
(1/n)Σ(Actual values - predicted values)^2
Where n = number of observations
Steps :
Error values of each observation (difference between actual and predicted values) is squared.
Step 2:
The squared values are summed
Step 3:
The summation is the divided by the number of observations
The difference between the actual and predicted values is known as the ERROR.
(1/n)Σ(ERROR)^2
n = 3
Error = +3, +3, - 3
MSE = (1/3)Σ[(3)^2 + (3)^2 + (-3)^2]
MSE = (1/3) × [9 + 9 + 9]
MSE = (1/3) × 27
MSE = 9