Answer:
<h2><u>
2 miles per hour</u></h2>
Step-by-step explanation:
Speed = Distance / Time
If we measure distance in miles and time in hour, we will get the speed in miles per hour.
Distance = 1 + 2/3 miles, which expressed as an improper fraction is 5/3 miles.
Time = 50 minutes which expressed in hours will be 50/60 or 5/6 hours.
(You can also see that 10 minutes is 1/6 of an hour, hence 50 minutes is 5/6 of an hour)
Speed = Distance / Time
= (5/3) / (5/6)
We know that dividing by "a/b" is same as multiplying by "b/a"
Hence, we have:
Speed = (5/3) * (6/5)
= (5 * 6) / (3 * 5)
= 30 / 15
= 2
Mara walks at a speed of 2 miles per hour
<span>In this equation, 2(8x-4)-2x = 14x+12 then, solving this we get, 16 x - 8 -2x = 14x +12 or -8-12 = -4x or -20 = -4x or x = 5. Thus, this equation hold true, When we use the equality sign instead of the question mark.</span>
In the addition/subtraction method, the two equations in the system are
added or subtracted to create a new equation with only one variable. In
order for the new equation to have only one variable, the other variable
must cancel out. In other words, we must first perform operations on
each equation until one term has an equal and opposite coefficient as
the corresponding term in the other equation.
The property shown there is the distributive property.
It states that a(b + c) = ab + ac
Or a(b - c) = ab - ac