Approximately 95% of any normal distribution lies within two standard deviations of the mean, i.e.
. Because the distribution is symmetric, you have
, so
.
It would be 4 2/9. Hope this helps!
Answer:
The area which would be painted grey will be "47.7812 ft²".
Step-by-step explanation:
The given values are:
Radius of circle, r = 5.4 feet
Value of pi, π = 3.14
As we know,
Area of Semicircle =
On putting the values in the above formula, we get
=
=
=
=
Answer:
x= -1
Step-by-step explanation:
the equation would be written like this
2+16x= -7x-21
add -7x on both sides
2+23x= -21
subtract 2 from each side
23x= -23
divide by 23 on both sides
x= -1
Answer:
105
Step-by-step explanation: