Answer:
B) 7^2 x 7^3
Step-by-step explanation:
B is 7^5 , everything else is 7^4
Answer:
0.02651
Step-by-step explanation:
P(all 5 are boys) =

= 0.02651 ( wow low)
Answer:
5ft
Step-by-step explanation:
...........................
Answer:
9 yd
Step-by-step explanation:
A cube consists of 6 square faces.
Divide the surface area by 6 for the area of one face
486 ÷ 6 = 81 yd²
The area of a square is
A = s² ( s is the side length )
Here A = 81, then
s² = 81 ( take the square root of both sides )
s =
= 9
Thus side length is 9 yd
It will take 8.2 x 10^20 electrons to have the same mass as one dust particle.
To get this answer, we divided the mass of the dust particle by the mass of the electron.
7.5 x 10^-10 divided by 9.1 x 10^-31 is 8.2 x 10^20