Answer: d.) a perfect square
Step-by-step explanation:
a.) number divisible by 2
There are three numbers divisible by 2: 2, 4, and 6. The odds of spinning one of these is 3/6.
b.) prime number
A prime number is a number that is divisible by 1 and itself. There are three prime numbers: 1, 3, 5. The odds of spinning one of these is 3/6.
c.) an odd number
There are three odd numbers: 1, 3, and 5. The odds of spinning one of these is 3/6.
d.) a perfect square
a perfect square is a number that has a whole number as a square root. There are two numbers that are perfect squares: 1 and 4. The odds of spinning one of these is 2/6.
The least likely is a perfect square with a probability of 2/6.
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Arc AB = 63 * 2 = 126 degrees
Answer:
5
Therefore, she must get 5 points from the last quiz to have a mean score of 4
Step-by-step explanation:
Mean is the average of a set of data, it is the sum of the data divided by the number of data.
To have a mean of 4 from 4 quizzes;
Let x represent the total;
mean = x/4
4 = x/4
x = 4 × 4 = 16
To have a mean of 4 he must have a total score of 16.
Let y represent her score in the last quiz;
16 = 4+3+4+y
16 = 11+y
y = 16-11 = 5
Therefore, she must get 5 points from the last quiz to have a mean score of 4
