Cho một hộp gồm 6 bi đỏ và 4 bi xanh. Chọn ngẫu nhiên từ hộp 2 bi cùng lúc. Tính xác suất để có ít nhất 1 bi đỏ

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step-by-step explanation:

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the ratio of balloons to tables is 5: 2 and the constant variation is 5.

the equation is y=5x

answer: first option i.e. 'a' is correct.

step-by-step explanation:

since we have given that

number of minutes to wrap a small gift box = 4 minutes

we need to find the number of gifts to be wrapped in 5 minutes

since there is a direct variation, as the number of minutes will increase with   number of gifts to be wrapped.

so, let the number of gifts to be wrapped in 5 minutes be x.

so, it becomes,

hence, first option 'a'   is correct.

the answer is option a you would get more money.it would be $250.

step-by-step explanation:

for option b 200/2=100=50% 100/2=50=25% 50/5=10=5% it would be $220