Answer:
x = 2.7
Step-by-step explanation:
The given equation is :

We need to solve it for x.
It can be rewrite as follows:

Adding 10 to both sides,

So, the value of x is equal to 2.7.
Answer:
x=22
Step-by-step explanation:
4x+2+x+3x+2=180
collect like terms
4x+x+3x=180-(2+2)
8x=180-4
8x=176
make x the subject of the formula
x=176/8
x=22
If you mean 1 and 7 over 100 then the answer is 1.07
Answer:
Step-by-step explanation:
No, it isn't!
first, the discount is 20 percent of 18 dollars, that is 18/5=3.6
this means that during the first week the prize is 18-3.6=14.4
now, the prize is marked up 20 % of 14.4! this is 2.88
so the prize later will be 14.4+2.88, that is 17.28, not 18
what is relevant here is what a number is a percent OF