The ratio figure b to figure a 1/3. Just times 6 by 3 and the you'll find that the volume of figure a is 18.
Answer: average speed is 8 km/h
Step-by-step explanation: in upstream his speed is 9 km/h -3km/h.
So his speed is 6km/h and he needs time t= s/v= 1.5 km: 6 km/h = 0.25 h
Downstream his speed is 9 km/ + 3km/h = 12km/h and time is
1.5 km:12km/h= 1/8 hours= 0.125 h
Average speed v = s/t = 3km: (0.25 + 0.125 ) h = 8 km/h
Answer:
7 is 15 questions
8 is $2.31
I’m not sure of 9 but my guess would be 250.51
Step-by-step explanation:
Answer:
Y=×^2-9
Step-by-step explanation:
(X+0)^2-9
Use the vertex form, y=a(x-h)^2+k
a=1
h=0
k=-9
And because the parabola opens up the vertex is (0,-9)
The distance from the vertex to a focus of the parabola by using the __ 1/4a__ formula:
1/4(1)
1/4
(h,k+p)
(0,-35/4)
Answer:
7068.58 yd³
Step-by-step explanation:
A half sphere would use the normal equation for the volume of a sphere and then divide it by two. The first step would be to find the radius of the sphere, which is half the diameter.
d=30 yd
r=d÷2
r = 30 yd÷2
r = 15 yd
Next, we need to use the volume of a sphere equation to find the volume of the full sphere.
V = 4×π×r³÷3
V = 4×π×15 yd³÷3
V = 4×π×3375 yd³÷ 3
V = 13500π yd³ ÷ 3
V = 4500π yd³
Next, we need to find the volume of the dome by dividing by 2.
V = 4500π yd³ ÷ 2
V = 2250π yd³
V = 7068.58 yd³
The total volume of the dome is 7068.58 yd³
