5(n-10)=40 is the equation
5n-50=40 solve for n
5n = 90
n =18
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if its diameter is 8 cm, then its radius is half that, or 4 cm.

Answer:
The probability that cards # 1, # 2, and # 3 are still in order on the top of the stack is 0.045%.
Step-by-step explanation:
Since a politician is about to give a campaign speech and is holding a stack of thirteen cue cards, of which the first 3 are the most important, and just before the speech, she drops all of the cards and picks them up in a random order, to determine what is the probability that cards # 1, # 2, and # 3 are still in order on the top of the stack, the following calculation must be performed:
1/13 x 1/13 x 1/13 = X
0.076 x 0.076 x 0.076 = X
0.00045 = X
0.00045 x 100 = 0.045
Therefore, the probability that cards # 1, # 2, and # 3 are still in order on the top of the stack is 0.045%.
Answer:
Rational
Step-by-step explanation:
The definition of rational is that it can be written as a fraction where the top and bottom are integers (the bottom integer not 0).
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43/10 is written in that form since 43 and 10 are both integers.
Y= -1/3x+5 is the equation to represent this line