Answer:
Step-by-step explanation:
Let her brother's age be x
Sarah is 2x + 4
Answer:
2 cherries to 9 ice cream
Step-by-step explanation:
Answer:
Sometimes
Step-by-step explanation:
Examples:
-5 + 10 = 5 FALSE
-10 + 5 = -5 TRUE
Answer:
x=7
Step-by-step explanation:
Speed is the magnitude in a velocity. It is a scalar quantity so it does not have direction unlike velocity which is a vector quantity. Speed and velocity refers to the distance traveled by a moving object per unit of time. We calculate speed as follows:
Speed = distance / time = 84 miles / 2 hours
Speed = 42 miles per hour