<u>ANSWER</u>
Extraneous solution: x=6
Real solution: x=11
<u>EXPLANATION</u>
The given expression is
Add -8 to both sides:
Square both sides.
We expand the to get
Write in standard quadratic form.
Factor to get:
We check for extraneous solutions by substituting each value of x into the original equation.
When x=6
Hence x=6 is an extraneous solution.
When x=11
This statement is true.
Hence x=11 is the only solution.
The correct answer of
if x=4 is 272.
to solve the equation if x equals 4, you must substitute the x of the 4.
then solve by order of operations.
solve what is inside the parentheses first
then do the multiplication of the factors
then the final step, adding, to get the solution of 272
19). sin(a) = 35/37
cos(a) = 12/37
Third choice.
20).
tangent(20°) = 10/x
x = 10/tangent(20°) = 10/0.364 = 27.475
Rounded to the nearest tenth: x = 27.5
If the function is:
f (x ) = 5 ( x +2 ) / ( 3 ( x-1 ) ( x - 7) then for: f ( x ) = 0
5 ( x + 2 ) = 0
x + 2 = 0
x = -2
Answer: E ) -2 ( only )
To find out which angles are coterminal, add and subtract 360 degrees from 50 degrees, so
your answer is 310, 670, -410, -770