<span>So we want to know which of theese products are negative. We have three rules: -1*(+1)=-1 and -1*(-1)=+1 and +1*(+1)=+1 Lets calculate and check: A. is negative, B. is negative, C. is positive and D.positive. So Aand B are negative and that is the correct answer.</span>
1) P=2w +2l
46=2w +14
32=2w
16= w or width
2) A=lw
A=7 x 12
A= 84
3) A= 12 x 21
A= 252
Answer: D.
Step-by-step explanation:
Water is continually pumped out of underground aquifers to prevent flooding and to provide drinking water. This makes the soil compact, causing the city to sink.
Answer:
Part 1) 
Part 2) 
Part 3) 
part 4) 
Part 5) 
Step-by-step explanation:
we know that
In a rectangle opposite sides are parallel and congruent
The measure of each interior angle is 90 degrees
The diagonals are congruent and bisect each other
step 1
Find the length of side PR
we know that
----> by opposite sides
we have

therefore

step 2
Find the length of side PQ
we know that
----> by opposite sides
we have

therefore

step 3
Find the length of diagonal PS
we know that
---> the diagonals bisect each other
we have
---> given problem
therefore

step 4
Find the length of diagonal QR
we know that
---> the diagonals are congruent
we have

therefore

step 5
Find the length of RT
we know that
---> the diagonals bisect each other
we have

substitute
