we know
distance =time *speed
from given question we have following equation
4*t+(1.5-t)*8=10
4*t+12-8t=10
12-4t=10
-4t=10-12
4*t=2
t=0.5 hour
hence at speed 4 miles per hour he crosses 4*0.5=2 miles
at speed 8 miles per hour he crosses 8*(1.5-0.5)=8 miles
1.500 since 45 rounds to 50
Answer:
i think A. (-3,0) is answer
Answer:
The volume of the cone is 314yd³
Step-by-step explanation:
radius = half of diameter
d = 10yd
r = 10yd / 2 = 5yd
First of all to solve this problem we have to know the formula to calculate the volume of a cone
v = volume
r = radius = 5yd
h = height = 12yd
π = 3.14
v = 1/3 * π * r² * h
we replace with the known values
v = 1/3 * 3.14 * (5yd)² * 12yd
v = 1/3 * 3.14 * 25yd² * 12yd
v = 314yd³
The volume of the cone is 314yd³
