Answer:
The system of equations is
Step-by-step explanation:
Let
c-----> the number of cheese pizzas
s----> the number of salads
we know that
-----> equation A
-----> equation B
I don’t see no expressions
Answer:

Step-by-step explanation:
[Most of the work here comes from manipulating the trig to make the term (integrand) integrable.]
Recall that we can express the squared trig functions in terms of cos(2x). That is,

And so inverting these,
.
Multiply them together to obtain an equivalent expression for sin^2(x)cos^2(x) in terms of cos(2x).

Notice we have cos^2(2x) in the integrand now. We've made it worse! Let's try plugging back in to the first identity for cos^2(2x).

So then,

This is now integrable (phew),

Answer:

Step-by-step explanation:
Use the distributive property.