Let H = height of the lighthouse
5.5/2.2 = H/48
5/2 = H/48
H = 5*48/2 = 120 feet
Answer:
i - 3abc
ii - 0
Step-by-step explanation:
i- abc,-2abc= -abc (think of it as 1-2)
-abc,+4abc=3abc (-1+4)
ii- 8xz,-2xz=6xz (8-2)
6xz,-6xz=0 (6-6)
Nice so
remember
t=d/s
a(b+c)=ab+ac
time=distance/speed
lets say s=jamie's normal speed
speed agains wind=s-4
speed with wind=s+4
30 miles is agains wind
distance is 54 with wind
t=d/s
t=30/(s-4)
t=54/(s+4)
since they are both equal to t, set them equal to each other
30/(s-4)=54/(s+4)
multipliy both sides by (s+4)(s-4)
30(s+4)=54(s-4)
distribute
30s+120=54s-216
subtract 30s from both sides
120=24s-216
add 216 to both sides
336=24s
divide both sides by 24
14=s
answer is 14 miles per hour without wind
Answer:11 and 12 is g and g and answer 13 is 5.36487494991
Step-by-step explanation:
Could you maybe add more info? like a story or something
