Ah clever. So you need two formulas.
1) Volume of the marble.
4(pi)r^3/3
= 4(pi)(1.4)^3/3
<span>= 11.49 (approx)
</span>
2) Formula for density.
D = M / V
= 9 / 11.49
= 0.78
0.78 < 1
Therefore the marble will float.
Answer:
1) Juans claim is incorrect. The correct experimental probablilty is 2/9
Step-by-step explanation:
Answer:
40
Step-by-step explanation:
5 people in the room have 5*40 = 200 years altogether
a new person is X years old.
Now 6 people have (200 + x) years altogether.
Mean age of 6 people is (200+x)/6. and it is also = 40.
So,
(200+x)/6 = 40
200 + x = 240
x = 40
Answer:
Step-by-step explanation:
we have
step 1
Exchange the variables (x for y and y for x)
so
Isolate the variable y
step 2
subtract 3 both sides
step 3
square root both sides
step 4
Adds 2 both sides
step 5
Let
