50+50-0*69/21
50+50-0
50+50
<span>100</span>
Answer:
B: 1 to 5
Step-by-step explanation:
3 hours is to 15 miles as 1 hour is to 5 miles (division by 3)
So use pythagorean theorem
a^2+b^2=c^2
a=base
b=height
c=legnth of ladder
a=2
b=c-0.5
subsitute
2^2+(c-0.5)^2=c^2
4+c^2-c+0.25=c^2
add like terms
c^2-c+4.25=c^2
subtract c^2 from both sides
-c+4.25=0
add c to both sides
4.25=c
the legnth of the ladder is 4.25 m