Answer:
50 meters
Step-by-step explanation:
the diameter is just Rx2 (R being the radius)
and the radius is D divided by 2 (D is the diameter)
Answer:
25
Step-by-step explanation:
Answer:
188π in^2
Step-by-step explanation:
Surface area of the rocket = surface area of the cone + surface area of the cylinder
Surface area of a cone = πr(r+h^2+r^2)
r = 8/2 = 4 in
4π( 4 + 3^2 + 4^2) =
4π ( 4 + 9 + 16) = 116π in^2
Surface area of a cylinder = 2πrh+2πr^2
(2 x n x 4 x 5) + (2 x n x 16)= 72π in^2
116 + 72 = 188π in^2
Answer:
We can conclude that there is significant evidence that Northwood residents owned their homes for a longer period of time compare to residents in the Southlake area
Step-by-step explanation:
H0 : μ1 = μ2
H1 : μ1 < μ2
Given :
n1 = 14 ; n2 = 28
x1 = 7.4 ; x2 = 9.1
s1 = 2.3 ; s2 = 2.9
α = 0.05
Test statistic :
(x1-x2) ÷ sqrt[(((n1-1)*s1² + (n2-1)*s2²) ÷ df) * (1/n1+1/n2)]
(7.4 - 9.1) ÷ sqrt[(((13*2.3^2) + (27*2.9^2)) ÷ 40) * (1/14 + 1/28)]
t = -1.7 ÷ sqrt[((68.77 + 227.07) / 40) * 0.1071428]
t = -1.7 ÷ sqrt(0.7924281488)
t = - 1.7 ÷ 0.8901843
t = - 1.909
t = - 1.91
The Pvalue :
P(t < - 1.91) = 0.028067
At α = 0.05 ;
Pvalue < α ; We reject the Null
We can conclude that there is significant evidence that Northwood residents owned their homes for a longer period of time compare to residents in the Southlake area
Answer:
16
Step-by-step explanation:
can divide each side by 3 and get: |x - 7| = 9
can solve as though equation was this: x - 7 = 9