one bag contains x pencils
5 bags contain 5x pencils
after adding 3 pencils to each bag
total no of pencils = 5(x+3)
According to question,
5(x+3)=45
x+3=45/5
x+3=9
x=6
one bag contained 6 pencils before adding
Answer:
3 cm on the map represents 31.5 km in reality.
3cm : 31.5 km
1cm : 31.5/3 km
1cm : 10.5km
So the scale on the map is 1cm represents 10.5 km.
I would go with the answer B
5.6% as a decimal is .056
<span>All you have to do is move the decimal point to the left 2 times when turning a percent onto a decimal.</span>
STEP
1
:
1
Simplify —
x
Equation at the end of step
1
:
1 1
— - —
9 x
STEP
2
:
1
Simplify —
9
Equation at the end of step
2
:
1 1
— - —
9 x
STEP
1
:
1
Simplify ——
x2
Equation at the end of step
1
:
1 1 1 1
(—-—) ÷ (——-——)
9 x 81 x2
STEP
2
:
1
Simplify ——
81
Equation at the end of step
2
:
1 1 1 1
(— - —) ÷ (—— - ——)
9 x 81 x2
(9x)/(x+9)-:(x-9)/(9x)
