Step-by-step explanation:
MULTIPLY length x width x height
We start with 12 samples with an average of 34 and add two more samples of 34, so the mean remains 34.
For the variance (squared standard deviation) we add up the squared differences between the sample and the mean and divide by n-1=11. With two additional samples exactly at the mean, the sum won't change but now we divide by 13. So our new standard deviation must be
Answer: 4.37
Answer:
Step-by-step explanation:
Height = √(90^2-63^2) = √4131 ≈ 64 ft
Answer:
x = 31.8°
Step-by-step explanation:
Law of sines:
sin (x) / 12 = sin(75°) / 22
Multiply both sides by 12
sin (x) = (sin(75°)/22) x 12
sin (x) = 0.5269
Inverse Sine:
x = sin−1(0.5269)
x = 31.8°