First solve C
Then make 2 equations to use them
X=22.5
A millennium = 1000 years.
A decade =10 years.
So the number of decades in a millennium = 1000 / 10 = 100
So there are 100 decades in a millennium.
Hope this explains it.
Answer:
The water is being pumped at a speed of
Step-by-step explanation:
By congruence of triangles, the radius r of the cone base when its height is 200 cm satisfies the relation
r/200 = 400/600
<h3>(See picture attached)
</h3>
So, r = 400/3 cm when the water is 200 cm high.
The volume of a cone with radius of the base = R is given by
So, the volume of water when it is 200 cm high is
One minute later, the height of the water is 200 cm + 20 cm = 220 cm
The radius now satisfies
r/220 = 400/600
and now the radius of the base is
r = 440/3
and the new volume of water is
So, the water is raising (being pumped) at a rate (speed) of
Answer:
x = 5
Step-by-step explanation:
Because the sides shown are parallel, the triangles are similar. That means the lengths of their sides and segments of sides are proportional.
x/(x + 10) = 10/30
x/(x + 10) = 1/3
3x = x + 10
2x = 10
x = 5