Answer:
0.7455
Step-by-step explanation:
First, we note that there are C
= 220 ways of selecting the defective items.
The probability that the inspector will have to test at least 9 widgets would be 1 minus the probability that the inspector will have to test 8 or less widgets.
This is 1 - P(8 or less widgets have to be checked)
1 - 
= 1 - 56/220
= 1 - 0.2545
= 0.7455
For #1-6, I'll write down the spelling errors first, and the correct spelling in bold. #7 will have the incorrect sentence first, and the sentence with correct punctuation in italics, with the punctuation bold.
1. super sonic supersonic
2. sub marine submarine
3. sub way subway
4. super natural supernatural
5. out field outfield
6. super star superstar
7. Do you like sports. <em>Do you like </em><em /><em>sports</em><em>?</em><em />
<em /><em />For #8-16, the word in bold is the correct spelling.
8. submarine submareen submarein
9. subdivsion subdivison subdivision
10. subersonic supersonic supresonic
11. underline undeline undrline
12. outfeild outfeeld outfield
13. overcast overcas ovrcast
14. overlok overlook overlock
15. suparmarkit suprmarkat supermarket
16. overboard overbored ovarboard
Area is height time width, or in this case, 3(2x^2+3x+5), which is 6x^2+9x+15.
slope = rise over run = y/x
A (-1,3) slope = 3/-1 = -3
B (1,2) slope = 2/1 = 2
C (-3,-1) slope = -1/-3 = 1/3
2 lines need to be negative reciprocals in order to be a right triangle
negative reciprocal of -3 is 1/3
so this is a right triangle
