A) Since there are four multiple choice questions Which has one correct answer. The probability of choosing a correct answer is

The probability of choosing wrong answer is

Using the multiplication rule

b) If you guess answers to three of the questions, then the possibilities of getting one correct answer are:
Either the first two are wrong and the third one is correct. This will give the arrangement;

Or the first is wrong the second one is correct and the last one is wrong. This will give the arrangement,

Or the first one is correct and the last two are wrong. This will give the arrangement,

.



c) The probability of getting one correct answer is either the first one is correct or second is correct or third is correct.
Answer:
$12.50 per hour
Step-by-step explanation:
All you have to do is divide 100 by 8 to find the hourly rate. His rate is $12.50 per hour.
Answer:
The simplified form of r^-7 + s^-12 is ----> 1/r^7 + 1/s^12
Step-by-step explanation:
Answer:
144
Step-by-step explanation:
Step 1: Find the sum of interior angles
Formula: 180(n - 2)
180(10 - 2)
180(8)
1440
Step 2: Assuming the 10-sided polygon's angles are all congruent, divide 1440 by 10
1440/10
144 degrees to each angle for all 10 angles.
A sequence is a set of numbers, called terms, arranged in some particular order. An arithmetic sequence is a sequence with the difference between two consecutive terms constant. The difference is called the common difference. A geometric sequence is a sequence with the ratio between two consecutive terms constant.