Answer:
BD = 22, DC = 11√3
Step-by-step explanation:
In triangle ABC, ∠B = 45°, ∠C = 90°. Hence:
∠A + ∠B + ∠C = 180° (sum of angles in a triangle)
∠A + 45 + 90 = 180
∠A + 135 = 180
∠A = 45°
Using sine rule to find BC:
In triangle BCD, ∠D = 30°, ∠C = 90°. Hence:
∠D + ∠B + ∠C = 180° (sum of angles in a triangle)
∠B + 30 + 90 = 180
∠B + 120 = 180
∠B = 60°
Using sine rule to find BD:
Using sin rule to find DC:
Answer:
Hi there!
The answer for number 13 is 2.
I picked two coordinates: (1,1) and (2,3)
Then I used the (y1-y)/(x1-x) equation to get 2.
The answer for number 14 is 2.
I picked two coordinates: (1,0) and (2,2)
Then I used the (y1-y)/(x1-x) equation to get 2.
Standard Normal Distribution. As discussed in the introductory section, normal distributions do not necessarily have the same means and standard deviations. A normal distribution with a mean of 0 and a standard deviation of 1 is called a standard normal distribution.
