17 inches
15^2 + 8^2 = 289
square root of 289 = 17 inches
Binomial distribution formula: P(x) = (n k) p^k * (1 - p)^n - k
a) Probability that four parts are defective = 0.01374
P(4 defective) = (25 4) (0.04)^4 * (0.96)^21
P(4 defective) = 0.01374
b) Probability that at least one part is defective = 0.6396
Find the probability that 0 parts are defective and subtract that probability from 1.
P(0 defective) = (25 0) (0.04)^0 * (0.96)^25
P(0 defective) = 0.3604
1 - 0.3604 = 0.6396
c) Probability that 25 parts are defective = approximately 0
P(25 defective) = (25 25) (0.04)^25 * (0.96)^0
P(25 defective) = approximately 0
d) Probability that at most 1 part is defective = 0.7358
Find the probability that 0 and 1 parts are defective and add them together.
P(0 defective) = 0.3604 (from above)
P(1 defective) = (25 1) (0.04)^1 * (0.96)^24
P(1 defective) = 0.3754
P(at most 1 defective) = 0.3604 + 0.3754 = 0.7358
e) Mean = 1 | Standard Deviation = 0.9798
mean = n * p
mean = 25 * 0.04 = 1
stdev = ![\sqrt{np(1-p)}](https://tex.z-dn.net/?f=%5Csqrt%7Bnp%281-p%29%7D)
stdev =
= 0.9798
Hope this helps!! :)
The answer is b. x=77, y=63
Answer:
ΔABC ~ ΔDEF
Step-by-step explanation:
If the given triangles ΔABC and ΔDEF are similar,
Their corresponding sides will be proportional.
![\frac{\text{AB}}{\text{DE}}=\frac{\text{BC}}{\text{EF}}=\frac{\text{AC}}{\text{DF}}](https://tex.z-dn.net/?f=%5Cfrac%7B%5Ctext%7BAB%7D%7D%7B%5Ctext%7BDE%7D%7D%3D%5Cfrac%7B%5Ctext%7BBC%7D%7D%7B%5Ctext%7BEF%7D%7D%3D%5Cfrac%7B%5Ctext%7BAC%7D%7D%7B%5Ctext%7BDF%7D%7D)
By substituting the measures of the given sides,
![\frac{4}{2}=\frac{6}{3}=\frac{2}{1}](https://tex.z-dn.net/?f=%5Cfrac%7B4%7D%7B2%7D%3D%5Cfrac%7B6%7D%7B3%7D%3D%5Cfrac%7B2%7D%7B1%7D)
2 = 2 = 2
Since, corresponding sides of both the triangles are proportional, both the triangles will be similar.
ΔABC ~ ΔDEF
4x+10y=-13...you have to add the variables that are the same and then subtract the 13 from 0