Answer:
X= 17.5
Step-by-step explanation:
the outside of the triangle always = 180
so you need to add up all the sides and equal to 180
5x+35+x+5+2x=180
add like terms
8x+40=180
get the x alone
x=17.5
3.14 the perimeter is the 4 in 3.14
It will take him 18 minutes b/c it takes him about 1.5 minutes to run 1 mile, therefore 1.5 times 12 is 18 minutes.