Answer:
b
Step-by-step explanation:
Answer:
Option 3. -8
Step-by-step explanation:
we have
Group terms that contain the same variable, and move the constant to the opposite side of the equation
Complete the square. Remember to balance the equation by adding the same constants to each side
----> the isolated constant right side is -8
Rewrite as perfect squares
Square root both sides
We can't answer the question without a picture of the figure.
You can use simultaneous linear equations in two variables to solve this word problem.
Let Juwan's age be
and Christy's age be
Let us sum their ages and equate it to 92
Ten years ago, Juwan's age was
and Christy's age was
By then Juwan's age was 3 times Christy's age
Expand and simplify,
Put equation (2) in equation (1)
Juwan is 64 now