Which of these expressions have negative values? select all that apply. 2 + 2(-3)(7) -2(27 ÷ 9)+4 (14 ÷ -) (4 - 10) - ( 8 ÷ ( -2))

A B D

Step-by-step explanation:

2 + 2(-3)(7)

2(27 ÷ 9)+4

(4 - 10) - ( 8 ÷ ( -2))

2+2(-3)(7) and -2(27÷9)+4 and (4-10) - (8÷(-2))

Step-by-step explanation:

because

2×-3×7=-42

2+-42=-39

-2(27÷9)+4

-2(3)+4

-6+4=-2

(14÷-2)(-6)

-7×-6=42

(4-10)-(8÷-2)

-6--4=-2

guess at question:

a vertical line intersects the graph of g(x,y) = 0 at two points. what conclusion follows about the function f(x) implicitly defined by g(x,f(x)) = 0?

the domain of f(x) cannot include the x coordinate of any such vertical line.

informally, f(x) is not a function, and

g(x,y)=0 cannot be solved for y uniquely.

the relation r = {(x,y) such that g(x,y) = 0} is a function if

for all (a,b) ∊ r and (c,d) ∊ r, a=c implies b=d.

step-by-step explanation: