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➷ The formula for surface area of a cylinder is:
The radius is half the diameter
radius = 40/2 = 20
Substitute the values in
Surface area =
Simplify to get an answer of:
surface area =
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Answer:
x=16
Step-by-step explanation:
since y=7 when x=8 and your trying to find what x is when y=14. Your really just taking the y value which is 7 then multiplying it by 2 which is 14. then since you multiplied the first y value by 2 you then just multiply the 8 by 2 and that is 16.
The second one : f(x) = x+3, x<0
= 3, x>=0
Answer:
I, II, and III are true.
Step-by-step explanation:
I. A correlation of -0.8 (negative) between weight and reliability means that the heavier the car, the less reliable it will be. Therefore, the statement is true.
II. A correlation of 0.6 (positive) between weight and maintenance means that the heavier the car, the higher the costs will be. Therefore, the statement is true.
III. Since the absolute value of the correlation between weight and reliability is higher than the absolute value of the correlation between weight and maintenance cost (0.8 > 0.6), weight is more strongly related to reliability than to maintenance cost. The statement is true.