Step-by-step explanation:
sin(2x) + cos(3x)
Use double angle formula sin(2x) = 2 sin x cos x.
Use triple angle formula cos(3x) = 4 cos³x − 3 cos x.
Substitute:
2 sin x cos x + 4 cos³x − 3 cos x
Answer:
Add 6 to both sides
Step-by-step explanation:
order of operations acronym- PEMDAS
P= parenthesis
E= exponents
M=multiply
D= Divide
A= Add
S= subtract
No parenthesis, exponents, multiply, or divide, so skip straight to add or subtract
Add comes first so add 6 to both sides
Add 6 to both sides.
If you want to eliminate x than multiply equation 1 by 4 and equation 2 by 3 and subtract them or,
If you want to eliminate y than mutiply equation 1 by 8 and equation 2 by 11 and subtract them.
Since everything is half off, you save half of your money or %50.
22 centimeters
242 ( area ) divided by 11( width) =22 ( length)