x/2 - 5 =3
add 5 to each side. this is the addition property of equality
it says when we add the same thing on both sides of the equation, we are not changing the value of the equation
we are using this to get the variable on one side and the constant on the other
x/2 -5+5 = 3+5
x/2 =8
multiply each side of the equation by 2
we are using the multiplication property of equality
it says when we multiply each side of the equation by the same thing, we are not changing the value of the equation
x/2 *2 = 8*2
x = 16
Answer:
135
Step-by-step explanation:
The equation is 135+90+x=360. x=360-(225)=135
Answer:
We know that n = 50 and p =0.78.
We need to check the conditions in order to use the normal approximation.
Since both conditions are satisfied we can use the normal approximation and the distribution for the proportion is given by:
With the following parameters:
Step-by-step explanation:
Previous concepts
The binomial distribution is a "DISCRETE probability distribution that summarizes the probability that a value will take one of two independent values under a given set of parameters. The assumptions for the binomial distribution are that there is only one outcome for each trial, each trial has the same probability of success, and each trial is mutually exclusive, or independent of each other".
Solution to the problem
We know that n = 50 and p =0.78.
We need to check the conditions in order to use the normal approximation.
Since both conditions are satisfied we can use the normal approximation and the distribution for the proportion is given by:
With the following parameters:
8+~1-3=4
Explanation-
8-1 is the same as 8+~1 so=7
7-3=4
The answer is B. 12 inches