A boat is traveling east across a river that is 112 meters wide at 8 meters per second. If the river has a northward current of a 5 meters per second, what is the resultant speed of the motorboat rounded to the nearest tenth?
A)8.6 m/s
B)3.0 m/s
C)13.0 m/s
D)9.4m/s

D) 9.4 m/s

Step-by-step explanation:

The boat has an eastward speed of 8 m/s and a northward speed of 5 m/s.  The resultant speed can be found with Pythagorean theorem:

v² = (8 m/s)² + (5 m/s)²

v = 9.4 m/s

step-by-step explanation:

answer: bea's uncle is 25 years old.

step-by-step explanation:

given the equation , we can say that the variable "x" represents the age of bea's uncle. then to find his age, we need to solve for "x":

we must add 15 to both sides of the equation:

now we need to divide both sides of the equation by 3:

therefore, we can conclude that bea's uncle is 25 years old.