30 miles/hour * x hours= 40 miles/hour * (x-4) hours
Distribute the 40, so you get
30x=40x-160
Subtract 40x from both sides
-10x=-160
Divide both sides by -10
x=16
They drove 16 miles
Answer:
4x²-17x+15
Step-by-step explanation:
when multiplying (4x-5)(x-3)
=4x(x-3) -5(x-3)
=4x²-12x-5x+15
=4x²-17x+15
Find the x intercept of the line from substituting y=0, then find the y intercept of the line from substituting x=0 then draw a line connecting these two points
Answer:
We conclude that:
Step-by-step explanation:
Given the expression
subtract 3 from both sides
Add -2² to both sides
simplify
Applying the perfect square formula: (a-b)² = a²-2ab+b²
so
∵
Therefore, we conclude that:
The answer is a^2 - 6ab + 8b^2