Answer:Since the vehicles are travelling in the exact opposite direction, the sum of their rates is the rate at which they are separating. 48 + 64 = 112 miles per hour of separation.

728 miles ÷ 112 miles/hour = 6.5 hours

Step-by-step explanation:

8 0

3 years ago

What is the domain of y = -2x^(2)+ 8x

Vaselesa [24]

The domain is (-inf,+inf) and the range is (-inf,8]

5 0

3 years ago

You earn (4x+12) points after completing X levels of a video game and then lose (2x-5) points. Write an expression that represen

Viefleur [7K]

4x + 12
2x - 5
-----------
6x+7
does this help at all?

7 0

3 years ago

Two equations are given below:

Sindrei [870]

$\left \{ {{a - 3b = 16} \atop {a = b - 2}} \right. \\ \\ \left \{ {{a = 16 + 3b} \atop { 16 + 3b = b - 2}} \right. \\ \\ \left \{ {{a = 16 + 3b} \atop {3b - b = - 2 - 16}} \right. \\ \\ \left \{ {{a =16 + 3b} \atop {2b = -18}} \right. \\ \\ \left \{ {{a=16 + 3b} \atop {b=-9}} \right. \\ \\ \left \{ {{a=16 + 3b = 16 + 3*(-9) = 16 - 27 = -11} \atop {b=-9}} \right.$

Answer a = -11, b = -9

8 0

3 years ago