Answer:
Step-by-step explanation:
Given
Probability that an inspector doe not identify low-quality timber=0.20
(a)Probability that both inspector do not identify a low quality timber
(b)Let n be the no of inspector
Probability should be less than 1%=0.01
so 
Taking 
both sides
x>2.861
thus minimum value of x is 3
(c)From part b it is clear that minimum 3 officer are required to to keep the low quality timber below 1%
on an average 2 officer are not sufficient to identify 4 low quality timber out of 100
Answer:
a) 2.6 b) -20 c) -44 d) -1494
Step-by-step explanation:
Terms:
A term is a single mathematical expression. It may be a single number (positive or negative), a single variable ( a letter ), several variables multiplied but never added or subtracted. Some terms contain variables with a number in front of them. The number in front of a term is called a coefficient.
a) 3+1.4+(-7)
3+1.4-7
Calculate.
-2.6
Terms: 3, 1.4, -7
b) 50+3(-10)+ 2(-20)
Multiply.
50-30-40
Calculate.
-20
Terms: 50, 3, -10, 2, -20
c) 4+(-50)+2
4-50+2
Calculate.
-44
Terms: 4, -50, 2
d) (4+(-170)) (5+4))
(4-170)+(5+4)
Add.
(4-170)x9
Calculate.
-166x9
Multiply.
-1494
Terms: 4, -170, 5, 4
Hope this helps :)
D
Because if you can do live by that you can do that bye-bye
Answer:
see below
Step-by-step explanation:
-7(x+2)+4x=6(2x-4)
Distribute
-7x -14 +4x = 12x -24
Combine like terms
-3x-14 = 12x-24
Add 3x to each side
-3x-14+3x = 12x-24+3x
-14 = 15x-24
Add 24 to each side
-14+24 = 15x -24+24
10 = 15x
Divide each side by 15
10/15 =15x/15
2/3 =x
