Answer:
r = I/P*t
Step-by-step explanation:
So I dont know how to explain it but to show you how to do it.
I = Prt
Divide both sides by Pt to get r alone

Therefore your answer is r = I/P*t
Hopes this help :)
Answer:
if 4x+5x-2x=42 then the value of x=6
I'm pretty sure you can only do it by calculator
Press the SIN button, open parentheses, 180, close parentheses,
And hit enter
Hope this helps :)