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3 years ago

The odds of choosing one black ball from an urn are 7 to 13. what is the probability of getting a black ball?

Mathematics

2 answers:

TEA [102]3 years ago

7 0

Answer: $\dfrac{7}{20}$

Step-by-step explanation:

The odds for an event is basically the ratio of the favorable outcomes to the unfavorable outcomes.

Given : The odds of choosing one black ball from an urn are 7 to 13.

i.e. favorable outcomes for getting black ball = 7

i.e. unfavorable outcomes for getting black ball = 13

Now , Total outcomes = favorable outcomes+ unfavorable outcomes

=7+13=20

Then, the probability of getting a black ball $=\dfrac{\text{Favorable outcomes}}{\text{Total outcomes}}$

$=\dfrac{7}{20}$

Hence, the required probability $=\dfrac{7}{20}$

ycow [4]3 years ago

4 0

I think the answer is 7/13.
Hope this helps.

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Which equation can be used to solve 3/5 divided by 7/10

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Answer:

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Step-by-step explanation:

Here we will show you how to calculate 3/5 divided by 7/10. We will give you the answer in fraction form and in decimal form.

Here is 3/5 divided by 7/10 displayed

3/5 ÷ 7/10

The numbers in 3/5 divided by 7/10 are labeled below:

3 = dividend numerator

5 = dividend denominator

7 = divisor numerator

10 = divisor denominator

To make it a fraction form answer, you multiply the dividend numerator by the divisor denominator to make a new numerator.

Furthermore, you multiply the dividend denominator by the divisor numerator to make a new denominator:

3 x 10/5 x 7 = 30/35

Thus, the answer to 3/5 divided by 7/10 in fraction form is:

30/50

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Answer:

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Step-by-step explanation:

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