<span>3√20/√5
= </span>3 √4 √5<span> / √5
= 3 * 2
= 6
answer is </span><span>b)6</span>
Surface area of a sphere = 4πr²
Surface area of the sphere = 4π(0.8)² = 8.0 ft²
Volume of a sphere = 4/3 πr³
Volume of the sphere = 4/3 π(0.8)³ = 2.1 ft³
Answer: Surface area = 8.0 ft² and volume - 2.1 ft³ (Answer C)
Answer:
1 2/3
Step-by-step explanation:
x-5x+5=2x-3x
-4x+5= -1x
5=3x
5/3=x
1 2/3=x
Answer: 16 g
Step-by-step explanation:
We can solve this with the Radioactive Half Life Formula:
Where:
is the final amount of radioactive calcium
is the initial amount of radioactive calcium
is the time elapsed
is the half life of radioactive calcium
Solving with the given data:
This is the amount of radioactive calcium left