<h3>
Answer: 1/3</h3>
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Explanation:
A = multiples of 5 between 1 and 30
A = {5,10,15,20,25,30}
B = multiples of 6 between 1 and 30
B = {6,12,18,24,30}
There are 6 items in set A and 5 items in set B. This gives 6+5 = 11 items overall; however, notice that "30" shows up twice. So we have to subtract off 1 to account for this. This means there are 11-1 = 10 unique values that are either a multiple of 5, a multiple of 6, or a multiple of both. This is out of 30 numbers in the set {1, 2, 3, ... , 29, 30}
The probability we want is 10/30 = 1/3
Ax + b = 3x -3a
Ax- 3x = -(3a+b)
x(A-3) = - (3a+b)
x = - (3a+b) / (A-3)
If a function is even, it gives the same result for positive and negative inputs such as 8 and -8.
<em>From the choices, the even functions are D and A.</em>
D because the absolute value thing makes any input positive, and A because any number raised to an even power gives a positive result.
Its better to teach someone to fish rather then giving him a fish
Remember you can do anything to an equaiton as long as you do it to both sides
3x-2x=7-5
combine like terms
1x=2
x=2