Answer:
16
Step-by-step explanation:

Answer:
3. 91.125
4. 30.375
Step-by-step explanation:
just multiply all of the sides
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Answer:
The library is 6 blocks away to the left of Alberto's place
Step-by-step explanation:
There's missing information on this question.
Suppose the point here is to find the distance.
A reflection across the y-axis makes the y-axis as the symmetry axis.
1) Each unit represents one block and they share the same y-coordinate (4).
2) We have to subtract the absolute value of x-coordinate.
So,

The library is 6 blocks away to the left of Alberto's place.
Let the two numbers be x and y
xy = -20 . . . . . (1)
x + y = 24 . . . . .(2)
From (2), x = 24 - y . . . . . (3)
Putting (3) into (1), we have:
(24 - y)y = -20
24y - y^2 = -20
y^2 - 24y - 20 = 0
y = 12 + 2√41 and x = 12 - 2√41