I think the best answer would be letter B. Y= 20x and Y= 30x+120. So by calculating it through substitution you will come up to 20x = 30x+120. By simplifying the equation it will give you an answer of 12 days.
Let x be the width of the playground, then 3x is the length of the
<span>playground
х * 3х = 75
3x</span>² = 75
x² = 25
x = 5 m (width)
5*3=15 m (length)
Perimeter = 2(5+15) = 2*20 = 40 meters.
Cube root of 343 = 7
of x^9 it is x^3 ( because x^9 = x^3 * x^3 * x^3)
of y^12 it is y^4
of z^6 it is z^2
So the correct choice is A
Answer:
4 miles
Step-by-step explanation:
<u>Walking:</u>
Distance = d miles
Rate = 4 mph
Time = t hours
<u>Biking:</u>
Distance = d miles
Rate = 10 mph
Time 
hours (convert minutes to hours)
Hence,
Therefore, the distance to friend's house is
and the total distance of the round trip is
