Answer:
15 ,90 30 45.90,23,23,45,
0
,12,3,
Step-by-step explanation:
I hope this helps you
1+33+57=180
1+90=180
1= 90
Answer:

Step-by-step explanation:
There are two variables, q and r in the expression given. To make r the independent variable, it simply means, make q the subject of the formula, so that variable q would be dependent on variable r. As r changes, q changes also.
Thus,

Open the parenthesis

Add 10 to both sides


