Answer:
9.2
Step-by-step explanation:
the Pythagorean theorem is a^2 + b^2 = c^2 where c in the hypotenuse
a=6 b=7
6^2+7^2=c^2
36+49=c^2
85=c^2
take the square root of 85, which equals 9.219544457..... and round to the nearest tenth: 9.2
Answer:
A) μ = 91.2; σ = 9.3
B) No
Step-by-step explanation:
To find the mean, μ, we use the formula
μ = np, where n is the sample size and p is the probability of success (percentage of times the letter is used).
This gives us
μ = 0.057(1600) = 91.2
To find the standard deviation, we use the formula
σ = √(np(1-p)
This gives us
σ = √(1600×0.057×(1-0.057))
= √(1600×0.057×0.943) = √86.0016 = 9.2737 ≈ 9.3≈
Any value that is more than two standard deviations from the mean is considered unusual. The value 102 is
(102-91.2)/9.3 = 10.8/9.3 = 1.16 standard deviations from the mean. This is not statistically unusual.
R = 112/1000 x 4 = 0.028 x 100 (find percentage) = 2.8%
Answer:
0, 15, 30
Step-by-step explanation:
0x3/4=0
20x3/4=15
40x3/4=30
Answer:
Step-by-step explanation:
AC = 50 cm
BC = 14 cm
Pythagorean theorem,
AB² + BC² = AC²
AB² + 14² = 50²
AB² + 196 = 2500
AB² = 2500 - 196
AB² = 2304
AB = √2304
AB = 48 cm
