Answer:
12
Step-by-step explanation:
Perimeter of ΔABC = 12+ perimeter of ΔACD
Perimeter of ΔABC= AC+CB+BA
Perimeter of ΔACD=AC+CD+DA
But, CB=CD +DB
DA ≅DB since there is a ⊥bisector trough D and
Therefore,
Perimeter of ΔABC= (AC+CD+DA)+BA = Perimeter of ΔACD +12 therefore AB=12
All students will have a chair to their needs. So a 100% probability.
Answer:
i am very sure of the first and second but I have two of the options for the third.
I hope this helps!
Answer:
C. (0.17, 0.39)
Step-by-step explanation:
Range of possible values that best describes an estimate for the population parameter is given by the formula;
p^ ± z(SE)
Now, we are given sample proportion is 0.28. Thus, p^ = 0.28
The range will have to be same difference to the left of 0.28 as it is to the right of 0.28.
For option A; difference between 0.14 and 0.28 which is 0.16 is not the same difference between 0.36 and 0.28 which is 0.08. Thus it's not correct.
For option B: difference between 0.16 and 0.28 which is 0.12 is not the same difference between 0.38 and 0.28 which is 0.10 Thus it's not correct.
For option C: difference between 0.17 and 0.28 which is 0.11 is the same difference between 0.39 and 0.28 which is also 0.11. Thus it's correct.
Foe option D: difference between 0.15 and 0.28 which is 0.13 is not the same difference between 0.37 and 0.28 which is 0.09 Thus it's not correct.