Answer:
(-4y,+12y), (z,19z)
Step-by-step explanation:
i got the same question.
Answer:
Part c) 
Part d)
or 
Step-by-step explanation:
Part c) Find the volume of the inverted rectangular pyramid
The volume of the rectangular pyramid is equal to

where
B is the area of the rectangular base
h is the height of pyramid
<em>Find the area of the base B</em>


substitute


Part d) Find the maximum volume of tea in the tea cup
we know that
The volume of cylinder (tea cup) is equal to

we have

substitute

-----> exact value
<em>Find the approximate value</em>
assume


Answer:
170 people I believe
Step-by-step explanation:
93 + 47 = 140
140 + 25/2 = 140 + 13 = 170
60/30 as a mixed # is 2/1 or 2