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jeyben [28]
3 years ago
15

(X-1)(y-1) area as product? And area as sum?

Mathematics
1 answer:
Tcecarenko [31]3 years ago
8 0

Step-by-step explanation:

product

(x-1)(y-1)

xy-x-y+1

xy-xy+1 (eliminate xy)

=1

sum

x-1 + x-1 + y-1 + y-1

2x-2 + 2y-2

=2x + 2y -4

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8 0
4 years ago
What is the length of the base of a triangle with height 18 m and area 99 square m?
Ivan
Use the equation for the area of a triangle:
A =  \frac{1}{2} hb
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You know that h=18m and A=99m^{2}. Plug those values into the equation and solve for b, the base.
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so
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