Answer:
Step-by-step explanation:
Given the following expression:
And knowing that:
We get:
Move the 3 to the left side of the equation:
Apply the Quadratic formula:
In this case:
Substituting values into the Quadratic formula, we get:
Answer:
x=62
Step-by-step explanation:
This is a straight angle so they have to add up to 180.
124+x-6=180
118+x=180
x=180-118
x=62
Answer:
The year in which the population of Los Angeles reached 2.6 million is 1965.
Step-by-step explanation:
We are given the approximate population y (in millions) of Los Angeles between 1950 and 2000 is given by:
y = Population(in millions)
We are supposed to find the year in which the population of Los Angeles reached 2.6 million.
Substitute y = 2.6
The real solution is x=14.77≈15
We are given that 0 corresponds to 1950.
So, 15 corresponds to 1965
Hence the year in which the population of Los Angeles reached 2.6 million is 1965.
2 root (x-5)=2
Divide each side by 2 (in order to isolate the square root):
Root (x-5) =1
Square both sides to remove the radical sign:
(x-5)=1
Solve:
x=6
To be sure that it is not an extraneous solution, check the solution by replacing the value for the variable in the equation.
2 root (6-5) = 2
The square root of 1 is 1.
2(1)=2
This is correct.
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hope this helps!