The perimeter of the rectangle ABCD:
P = 2AD + 2AB
We have AD = 4z and AB = 5z + 2 and perimeter = 220 units. Substitute:
2(4z) + 2(5z + 2) = 220 <em>use distributive property</em>
8z + (2)(5z) + (2)(2) = 220
8z + 10z + 4 = 220 <em>subtract 4 from both sides</em>
18z = 216 <em>divide both sides by 18</em>
z = 12 units
Substitute to AD:
AD = 4(12) = 48
<h3>Answer: AD = 48 units.</h3>
Answer:
B) 0.9, 0.45, -0.77, -0.95
Explanation:
The correlation coefficient is a statistical measure that indicates the strength of the relationship between two variables. The value usually ranges from -1 to 1 where:
• 1 indicates a strong positive relationship.
,
• -1 indicates a strong negative relationship.
,
• A result of 0 indicates no relationship at all.
Therefore, the given correlation coefficients classified from the strongest to the weakest is:
![0.9,0.45,-0.77\text{ and -0.95}](https://tex.z-dn.net/?f=0.9%2C0.45%2C-0.77%5Ctext%7B%20and%20-0.95%7D)
The correct choice is B.
Answer:
simple
Step-by-step explanation:
The radius of the wheel can be solved from its given speed and RPM.
Converting km/h to m/min
speed = 66 km / h = 66000 m / 60 min
speed = 1100 m / min
Converting one revolution to meters
1100 m / min = 500 revolution / min ... (given)
500 revolutions = 1100 m
1 revolution = 2.2 m
Solving for the radius of the wheels in meters
1 revolution = 2.2 m
2 * pi * radius = 2.2 m
radius = 2.2 m / 2 * pi
radius = 1.1 m / pi
radius = 0.3501 m
Answer: B and E
Step-by-step explanation: Trust me, this is correct