Answer: Substitution
Step-by-step explanation:
Use substitution because x=-3y+10 is already solved for variable x.
Answer:
yards.
yards.
Step-by-step explanation:
We have been given that a square playground is surrounded by a sidewalk on all sides. The sidewalk is
yards long on each side of the park.
Since side walk is 0.5 yard wide, so each side of playground will be 0.5 less than each side of sidewalk.



Since playground is square, so perimeter of playground will be 4 times the length of each side of playground.

Upon distributing 4 we will get,

Therefore, perimeter of playground will be
yards or
yards.
Answer:
for the first one: 30/100
second one: 50/100
Step-by-step explanation:
first one: take 3/10 * 100/100 - without simplify
second one: 3/10 + 2/10 = 5/10 which is 1/2 then 1/2 * 100/100 = 50/100 - without simplify
the answer are in bold