Answer:
The answers to the questions are;
(a) P(At least 1 defective)
= 0.9883.
(b) P(At least 1 defective)
= 0.6409.
Step-by-step explanation:
There are 110 cards and 20 defectives.
a) The probability of at least one defective is given by
P(At least 1 defective) = 1 - P(0 defective)
P(0 defective) = 20C0 × (90C0)/(110C20) = 0.0116
1 - 0.0116 = 0.9883
b) For a set of 110 boards that has 5 defective and 105 non-defective
P(At least 1 defective) = 1 - P(0 defective)
P(0 defective) = (20C0)(90C5)/(110C5) = 0.35909
1-0.35909
= 0.6409
Answer:
Percentage of gold bangles is 66.6 and of silver bangles it is 33.3
Step-by-step explanation:
Given:
Number of gold bangles Mala has = 
Number of silver bangles she has = 
Total number of bangles = 
= 
We have to find the percentage of each type of bangles.
So,
Percentage of bangles = 
- Percentage of gold bangles.
⇒ 
⇒ 
⇒ 
⇒ 
⇒ 
- Percentage of silver bangles.
⇒ 
⇒ 
Percentage of gold bangles, Mala has = 66.6 and of silver bangles it is = 33.3
Answer:
x=12
Step-by-step explanation:
Let y equal number of pushups a day. When x = 1, y = 8. When x = 2, y = 10. 10 is a factor of 30. Multiply y by 3. However, since x increases by 1 when y increases by 2, multiply x by 6 (2*3). That equals 12. Therefore, when x = 12, y = 30.
The answer to your question is,
Ed is 27. His brother is 9.
How did I get this answer?
Ed's age is twice that of his brother. So of course, when you divide 36 by 2, you would get 18. They are not twins so this wouldn't be the answer. You need to divide 18 by 2 again. This makes 9. If you add 9 to 27, that makes 36. Which is their ages.
-Mabel <3
