B. 1/9
C. 3/8
D. 3/5
The probability that a randomly chosen representative from Ms. Perez's homeroom will be a boy is 3/8. the answer is C. 3/8.
The subject of this question is probability, a topic in mathematics. In this specific question, we are asked to calculate the probability that a randomly chosen representative from Ms. Perez's homeroom will be a boy. The probability of an event is calculated as the ratio of the favorable outcomes to the total number of outcomes. In this case, there are 9 boys and the total number of students is 24. So, the probability is 9/24, which simplifies to 3/8. Therefore, the answer is C. 3/8.
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Answer:
addition
Step-by-step explanation:
A.
Calculate how much money Wendy has to start with. Add up the money she spent. Add the amount Wendy spent to the amount she started with.
B.
Calculate how much money Wendy spent. Add this to the number of items she bought. Subtract this sum from the amount of money Wendy's sister has.
C.
Calculate how much more money Wendy had than her sister Add up the money Wendy spent. Subtract the two amounts.
D.
Calculate how much money Wendy has to start with. Add up the money she spent. Subtract the amount Wendy spent from the amount she started with.
To find the number of black bicycles in a total of 25 bicycles given a ratio, divide the total number of bicycles by the total number of parts in the ratio and multiply by the number of parts representing black bicycles.
To find the number of black bicycles, we first need to find the total number of parts in the ratio. The ratio of gray bicycles to black bicycles is 6 to 9, which means the total number of parts is 6 + 9 = 15. We can then calculate the number of black bicycles by dividing the total number of bicycles by the total number of parts and multiplying by 9. So, the number of black bicycles is (25/15) x 9 = 15 bicycles.
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