Answer:
x=10/7
Step-by-step explanation:
simplify both sides of the equation
2 * 2 + 6 = 7x
4 + 6 = 7x
combine like terms
(4 + 6) = 7x
10 = 7x
flip the equation
7x = 10
divide both sides by 7
7x/7 = 10/7
answer is 10/7
Step-by-step explanation:
Let people behind you=x
People ahead of you will be x+2
Total number of people in the line(including you) = x+(x+2)+1 = 2x+3
Also, 2x+3=3x
So x=3
People ahead = x+2 = 5
People behind = x = 3
Answer:
A. x²+x-11
Step-by-step explanation:
Take one of the x values and try them out on all formulas to see if the expected output occurs.
Already with x=2 you get
-5, 28, -3, 27 so you know that only the first formula works.
The answer is 60 because 2x3 is 6 so 20x 3 is 60
Answer:
Step-by-step explanation:
Given that there are 3 boxes. First box contains 100 components of which 20 % are defective, second box contains 200 components of which 25 % are defective, third box contains 300 components of which 40 % are defective.
Box is selected randomly and from this box one component is selected randomly. The chosen component turned out to be defective.
Here A1, A2 and A3 events from drawing I, II and III box are mutually exclusive and exhaustive
B = The drawn ball is defective
Required probability
a) second box = P(A2/B)
=
(by Bayes theorem of conditional probability)
= 
b) third box = P(A3/B)
=