vancheer2016
contestada

Which values of A and B make the following equations true?
(5x^7 y^2)(-4x^4 y^5)=-20x^a y^b
A) a=11, b=7
B) a=11, b=10
C) a=28, b=7
D) a=28, b=10

Respuesta :

choixongdong
(5x^7 y^2)(-4x^4 y^5) =-20x^a y^b

solve this:
(5x^7 y^2)(-4x^4 y^5)
= -20 x^(7 + 4) y^(2 + 5)
= -20 x^11 y^7

answer

A) a=11, b=7
ematthewssss6

Answer:

A

Step-by-step explanation:

A would = 11 and b would = 7

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