Answer:
Probability of selecting a ball from the first ball if it is a blue ball = = 0.75
Step-by-step explanation:
Number of blue balls in the first box = 3
Number of blue balls in the second box = 1
Total number of blue balls = 3 + 1
Total number of blue balls = 4
Probability = (Number of possible outcomes)/(Number of total outcomes)
Probability of selecting a ball from the first ball if it is a blue ball = 3/4
Probability of selecting a ball from the first ball if it is a blue ball = = 0.75
Answer:
to find a probability,we need to follow the rule
P/n
p=1
n=6
=1/6
Answer:
Gerri spends 1/7 (A).
Step-by-step explanation:
If Gerri spends 1/21 of her money on pencils and 2/21 of her money on paper, adding these two fractions together will give us the total fraction of her money that she spent. Since 1/21 and 2/21 have the same denominator, we can add the numerators to get 3/21. However, fractions must always be in simplest form, meaning if the numerator (top number) and denominator (bottom number) can both be divided evenly by the same factor, then the fraction can be simplied to lower numbers. In this case the number 3 and the number 21 can both be divided evenly by 3: (3÷3)/21÷3) = 1/7.
Answer:
Step-by-step explanation:
-1/6 * -1/5 = 1/30
A negative number times a negative number equals a positive number. When multiplying fractions, the numerators get multiplied over the denominators being multiplied. so -1 * -1 = 1 which is the numerator. 6 * 5 is 30 which is the denominator.
