Answer:
10cm
Step-by-step explanation:
The formula for perimeter is:

Let the width of the rectangle be x then the length would be...
3+x
Now, let's plug these values into the equation and solve. (Note we are also given perimeter is 34 cm):

And since the length is x+3 then it is...
x+3=7+3=10cm
Yes, it's an identity because remember sin 6x would be (3x + 3x)= which would make it 2 sin 3x....concluding the equation should be an identity. :)
Hoped this helped :)
Answer:
the answer would be 36.
Step-by-step explanation:
and here go you would get it
R(-5) = -3*(-5) - 4
R(-5) = 15 - 4
R(-5) = 11
Q(X)=3X+3
Q(11) = 3*11 + 3
Q(11) = 33 + 3
Q(11) = 36
So, (Q(R(-2) = 36
hope it is correct..