Answer: 11
Students have both a brother and a sister
Step-by-step explanation:
I don't think probability should be used for this question because the answer is quite clear
So in a class of 25 students
5 students don't have a sibling
So 25-5=20
Total number of siblings=14+17=31 siblings in total
So 20 people have 31 siblings
31-20=11
So the answer should be 11
Answer:
1. Yes
2. No
3. Yes
4. No
Step-by-step explanation:
When you say a random sample, this means that every member of the population will have a chance to be part of the sample. If you consider the scenarios, only the 1st and 3rd option will come up with a random sample because the respondents of the sample is not predetermined. If you take the other options into consideration, you can see that not everyone would have had a chance to be part of the sample.
Answer:
Sin A = 20/29
Cos A = 21/29
Tan A = 20/21
Sin C = 21/29
Cos C = 20/29
Tan C = 21/20
Step-by-step explanation:
Sine is opp/hyp, cosine is adj/hyp, and tangent is opp/adj.
Answer:
the first equation or the one below it
Step-by-step explanation:
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