2x +3x = 180
5x = 180
x = 36
Answer:
The nation's total wealth more than doubled between 1920 and 1929, and this economic growth swept many Americans into an affluent but unfamiliar “consumer society.” People from coast to coast bought the same goods (thanks to nationwide advertising and the spread of chain stores), listened to the same music
4.20 divided by 4.00= 1.05
turn decimal into percentage by times 100
1.05 times 100= 105%
Answer:
114.4
Step-by-step explanation:
421.2
-305.2
114.4
Answer:
See explanation
Step-by-step explanation:
1 step:
n=1, then

So, for j=1 this statement is true
2 step:
Assume that for n=k the following statement is true

3 step:
Check for n=k+1 whether the statement

is true.
Start with the left side:

According to the 2nd step,

Substitute it into the 

So, you have proved the initial statement