A keypad at the entrance of a building has 10 buttons labeled 0 through 9. What is the probability of a person correctly guessing a 9-digit entry code if they know that no digits repeat?
Answer:
the probability of a person correctly guessing a 9-digit entry code if they know that no digits repeat is 0.1
Step-by-step explanation:
We know that probability= number of required outcomes /number of all possible outcome.
From the given information;
the number of required outcome is guessing a 9-digit = 1 outcome
the number of all possible outcome = ¹⁰C₉ since there are 10 numbers and 9 number are to be selected.
Since there are only 9-digit that opens the lock;
the probability of a person correctly guessing a 9-digit entry code is
P = 0.1
1)
area of half of the circle: 628.32
are of parallelogram: 4000
Exact area of shaded: 3,371.68 cm squared.
The answer to the equation under the shape is: A = 4000 - 628.32 π in²
2)
area of both circles added together: 173.18
full area of rectangle: 220.5
Exact area of shaded: 47.32
The answer to the equation under the shape is: A = 220.5 - 173.18 π in²
Hope this helps!
Please give Brainliest!
Answer:
0
Step-by-step explanation:
The slope is the difference in y values / difference in x values of the points.
For (-9, 5), and (-17, 5) slope is zero because the y-coordinates are the same.
m= (5-5)/ (-17- -9) = 0/ 8 = 0
The line has the slope 0 so is a horizontal line
Answer:
A. -6
Step-by-step explanation:
f(-7)=2(-7)+8
=(-14)+8
=-6
14h = c
If c = the total cost, then the equation should end with "= c" because we're trying to find the total cost of renting a row boat.
If the row boat is $14 per hour, that's 14 x hours, or 14h.
Therefore, 14h = c.
Hope this helps
