Person 3 bought a brand new car for $22,000. A year later the car had depreciated 23%. How much did the car depreciate?
1 answer:
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ANSWER
EXPLANATION
The given equation is
The solution to this equation can be found by making y the subject.
This equation has infinitely many solution. Any real value we choose for x, there is a corresponding y-value.
To find which of the given options also has the same solution, we make y the subject.
A
This is not the same as the given equation.
B
This solution is the same as the one given.
C.
This is the same as the above solution.
D.
This is not the same as the one given.
E.
This is the same as the one given.
F.
Thus is the same as the one given.
G.
This is not the same as the one given.
EXPLANATION
The given equation is
The solution to this equation can be found by making y the subject.
This equation has infinitely many solution. Any real value we choose for x, there is a corresponding y-value.
To find which of the given options also has the same solution, we make y the subject.
A
This is not the same as the given equation.
B
This solution is the same as the one given.
C.
This is the same as the above solution.
D.
This is not the same as the one given.
E.
This is the same as the one given.
F.
Thus is the same as the one given.
G.
This is not the same as the one given.
Answer:
x = - 1, x =
Step-by-step explanation:
Given
8x² + 7x - 1 = 0 ← in standard form
Consider the factors of the product of the x² term and the constant term which sum to give the coefficient of the x- term
product = 8 × - 1 = - 8 and sum = + 7
The factors are + 8 and - 1
Use these factors to split the x- term
8x² + 8x - x - 1 = 0 ( factor the first/second and third/fourth terms )
8x(x + 1) - 1(x + 1) = 0 ← factor out (x + 1) from each term
(x + 1)(8x - 1) = 0
Equate each factor to zero and solve for x
x + 1 = 0 ⇒ x = - 1
8x - 1 = 0 ⇒ 8x = 1 ⇒ x =