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TaylorPayne
TaylorPayne TaylorPayne
  • 17-08-2015
  • Mathematics
Answered

Which expressions are equal to 4 when x = 7 and y = 2?


Choose all answers that are correct.


A.

x – y – 1


B.

x – (6 ÷ y)


C.

xy – 8


D.

x + y – 4

Verified Answer :

rachelhuynh rachelhuynh
  • 17-08-2015
Ax-y-1, B. x-(6/y) and C. xy-8

A. 7-2=5
5-1=4

B.7-(6/2)
order of operations
parentheses
6/2=3
7-3=4

C. 7(2)-8
7(2)=14
14-8=4

Not D, because
7+2-4
7+2=9
9-4=5
Answer Link

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