Answer:
x² + y² = 4
Step-by-step explanation:
We need to write the standard equation of circle with , centre (0,0) and radius 2 unit . The Standard equation of the circle ⭕ is ,
=> ( x - h)² + (y -k)² = r²
=> ( x -0)² + (y-0)² = 2²
=> x² + y² = 4 .
<h3>• Hence the equation of the circle is x² + y² = 4.</h3>
Answer:
The milk to water ratio in the new mixture is 3:2.
Step-by-step explanation:
Given that in a mixture of one hundred liters of milk and water the ratio of milk and water was 4: 1, to determine what is the ratio of milk to water in the new mixture when 25% of the mixture is removed and the same amount of water is added, the following calculation must be performed:
(100/5) x 4 = 80
80 liters of milk
20 liters of water
80 x 0.75 = 60
20 x 0.75 = 15
15 + 25 = 40
60 + 40 = 100
Thus, the milk to water ratio in the new mixture is 3:2.
Answer:
0.531 (3 s.f.)
Step-by-step explanation:
Power rule is used for the 3rd step.
Shown from studies, it would take around 1.11 seconds to fall from a 20 feet high drop.