The answer is 345 because you have to round
Suppose
h=height of street light
x=distance of woman from pole, 20-x=distance of man from pole
tan 24=x/h=0.445
tan 28=(20-x)/h=0.532
re-arranging the above we get:
x=0.445h
20-x=0.532h
thus the value of h will be given by:
20=0.977h
hence
h=20.5 ft
substituting the values we get:
x=woman's position =9.1 ft from the pole and the man is 10.9 ft away.
Explanation:
Five hundred fifty-five thousandths is 555/1000 = 111/200, the ratio of two integers, hence a rational number.
V1=50km/h
v2=90km/h
s1=s2=6km
s=12km
The average speed over the 12 km drive:
v=s/t
The time needed to drive 12km will be:
t = t1+t2
t1=s1/v1, t2=s2/v2
t=s1/v1+s2/v2=(s1v2+s2v1)/(v1v2)
v=sv1v2/(s1v2+s2v1)=12*50*90/(6*50+6*90)=64,28 km/h
Answer:
Option B is correct.
Step-by-step explanation:
300 cm^3 of snow melts into 33 cm^3 water. We need to find how much water is produced if 600 cm^3 of snow is melt.
Solving using unitary method:
300 cm^3 of snow melts into water = 33 cm^3
1 cm^3 of snow melts into water = 33/300
600 cm^3 of snow melts into water = 33/300 *600
= 66 cm^3
So, Option B is correct.
