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
Answer:
B
Step-by-step explanation:
given
- 4x²(3x - 7)
multiply each term in the parenthesis by - 4x²
= (-4x² × 3x) + ( - 4x² × - 7)
= - 12x³ + 28x² → B
Here you go, I hope this helps
Answer:
10
Step-by-step explanation:
Answer:
-5
Step-by-step explanation:
From your knowledge of multiplication tables, you know that ...
-35 = -(7×5) = 7×(-5)
Then comparing to the given equation, you realize ...
t = -5
_____
Or, you can recognize 7 as the coefficient of t and divide both sides of the equation by that:
-35/7 = (7t)/7
-5 = t