C is the correct answer, because the equation on the two sides are the exact.
Answer:
X = {0, 1, 2, 3, 4}
Step-by-step explanation:
If X is the number of nonzero digits in a 4-digit PIN with no restriction on the digits, the pin can have up to 4 nonzero digits.
Let's see some examples:
If the PIN is 0000 then X = 4
If the PIN is 2045 then X = 3
If the PIN is 7546 then X = 0
From the previous examples, we can see that the possible values for X are 0, 1, 2, 3, 4.
Thus X = {0, 1, 2, 3, 4}
Answer:
20
Step-by-step explanation:
The first step is to find out the similarity reason of the sides of the triangle, so we just divide the big side by the small side (12/4=3).
Now, for the similarity reason of the areas, we just square that number (3^2=9).
Then we just divide the area of the big triangle by 9, which is 180/9= 20.
100% --- $79.99
1% --- $(79.99÷100) = $0.7999
20% off means 100% - 20% = 80%
80% --- $0.7999×80 = $63.992
Leave it to the nearest cent: $63.99 ---- Answer!
If you need further clarifications, leave a comment down below! I'll try my best to help you. :)
