A person with type O blood can donate red blood cells to anybody because type O blood is the universal donor blood type. About 4
2 answers:
Answer: (b) 0.8
Step-by-step explanation:
Assign 00 - 43 to people will have type O blood and assign 44 - 99 to people will not have type O blood
Trial 1 :
Blood group O - 4
Not Blood group O - 6
Trial 2 :
Blood group O - 4
Not Blood group - 6
Trial 3:
Blood group - 5
Not Blood group - 5
Trial 4:
Blood group: 5
Not Blood group - 5
Trials 5 :
Blood group - 2
Not Blood group - 8
(b) Out of the 5 trials it was in the fifth trial that the number of blood group O is not up to 3,so, the probability that at LEAST 3 of 10 people will have type O blood?
= 4/5
= 0.8
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Answer:
1) B = 66.5° c = 10.9
Step-by-step explanation:
I will do question one as an example. In general, for these questions you want to use the appropriate trigonometric ratios to solve for the variables and/or apply logic using rules regarding triangles. See attached image for all solving steps.
For side c, we can use Cosine of angle A for a ratio between 10 and c. When we write out the equation, we can solve for side c. So when we write it out, we get the equation:
cos23.5 = ¹⁰⁄c
c = ¹⁰⁄cos₂₃.₅
c = 10.9044 (make sure to round to the nearest tenth, which is one decimal place)
For angle B, since they have given two angles, you can solve for B since all angles of a triangle add up to 180 degrees.
So b = 180 - (90 + 23.5) = 180 - 113.5
b = 66.5
- It is also possible to solve this using sine of angle B and solve it from there, but applying the theory this way is much simpler. (this is on the image if you're curious about it)
I hope this helps you with the other 3 questions.
