Answer:
mean is adding up all the numbers.
range means the difference between the Lowest and highest value.
Step-by-step explanation:
when we add the answer is 240.6.
divide it to 12..do the final answer is 20.05
range is 25.4_16.3
9.1
Cross Multiply by 'x - 5'
Hence
y(x - 5) = 4 -3x
xy - 5y = 4 - 3x
Move all the terms containing an 'x' to one side of the equals and all the others to the opposite side.
xy + 3x = 4 + 5y
Factor out 'x'
x(y + 3) = 4 + 5y
'Cross' divide by 'y + 3'
x = ( 4 + 5y) / (y + 3 )
'x' is now the subject.
Answer:
10/21
Step-by-step explanation:
Answer:
x>-6
Step-by-step explanation:
add 7 to each side
-3x<18
divide each side by -3
x<-6
Answer:
- same as original.
- less than original.
- less than original.
- same as original.
- greater than original.
Step-by-step explanation:
Let the original amount be $100.
A) 50% decrease = 100-50%of 100=100-50=$50
Then increase 100 % = 50+100% of 50=50+50=$100, which is same as original.
B) 20% increase = 100+20%of 100=100+20=$120
Then decrease 25 % = 120-25% of 120=120-30=$90, which is less than original.
C) $25 increase = 100+25=$125
Then decrease $30= 125-30=$95, which is less than original.
D) 
decrease =
Then increase 50%=
, which is same as original.
E) 80% increase = 100+80%of 100=100+80=$180
Then decrease 40% = 180-40% of 180=180-72=$102, which is greater than original.