Answer:
Step-by-step explanation:
z value of 14.9 = (16.3 - 14.9) / 2
= 0.7
= .7580
z value of 12.9 = (16.3 - 12.9) / 2
= 1.7
=.9554
Required probability = .9554 - .7580
= .1974
or 19.74 % .
Refer to a diagram of the normal distribution shown below.
As the z-value increases to the right, areas to the left of z (shown shaded) will increase.
Answer:
As z-values increase, areas to the left of z increase.
Answer:
x=3+sqrt(2), 3-sqrt(2).
Step-by-step explanation:
x^2-6x+7=0
Apply the quadratic formula
Area=legnth times width
a=lw
area=432
width is 3/4 its lenth
w=3/4 times l
subsitute
a=l(3/4 times l)
a=432
432=l(3/4 times l)
432=3/4l^2
multiply both sides by 4/3 to clear fraction
1728/3=l^2
576=l^2
take the squaer root of both sides
24=l
subsitute
w=3/4l
w=3/4(24)
w=18
legnth=24 feet
width=18 feet