(3,750 people
60%=did shop
40%=did not shop =2,500
2,500/40 = x/100
40x = 2,500x100
40x=250,000
x = 250,000/40
x=6,250
6,250 =all people at the mall
6,250 - 2,500 =3,750 (60%)
OR
(2,500 x60)/40 = 3,750
Answer:
3750
Step-by-step explanation:
2500 is 40% of 6250. 6250 - 2500 = 3750 or 60% of the people.
Answer:
3x+8
Step-by-step explanation:
First, we can write the sum into a mathematical expression:
The sum of (x+5) and (2x+3)
(x+5)+(2x+3)
However, we do not need the parenthesis. It is unnecesarry here as we are just adding the two parts:
x+5+2x+3
Using commutative property, we can rearrange the symbols so that the x's are with each other and the numbers are with each other:
x+2x+5+3
Now we can simplify the expression:
3x+8
Hope this helped :)
b) How much nickel is needed to mix with 20kg of copper?
Answer:
(5×10)+(1+10x)
Step-by-step explanation:
50/5=10
10/10=1
Answer: 10(5+x)
Step-by-step explanation: