wdwaddy567 wdwaddy567

17-03-2021
Mathematics

contestada

If x +y = 14 and x - y = 6, then the product of 2
and y is equal to which of the following?

If x y 14 and x y 6 then the product of 2 and y is equal to which of the following class=

Respuesta :

17-03-2021

Answer:

40

Step-by-step explanation:

x+y=14

x-y=6

---------------------

x=-y+14

x-y=6

---------------------

Substitute:

-y+14-y=6

-2y+14=6

-2y=-8

y=4

x=-y+14

x=-4+14

x=10

---------------------

4•10=40

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