Which expressions simplifies to a negative number? (-1) three times , (-1) two times, (-1) four times, or (-1) five times? ?

-1 three times and -1 five times

Step-by-step explanation:

-1 three times = -1 X -1 X -1 = -1

-1 two times = -1 X -1 = 1

-1 four times = -1 x -1 x -1 x -1 = 1

-1 five time = -1 x -1 x -1 x -1 x -1 = -1

Therefore -1 three times and -1 five times will be negative

%40

step-by-step explanation:

system of linear equation

step-by-step explanation:

as given in the data

a= 20 , b= -12

let us suppose that it is a straight line equation

now we know the formula for the system of linear equation

b= ma + c )

here m is slope of a straight line which is equal to formula

m=   (ii)

and here c is a constant

now putting the value of a and b in equation (ii)

m=

m=

putting the value of a,b and m in equation (i) gives us

-12 = + c

-12=-12 + c

adding 12 to both sides

-12 +12 = -12 +12 +c

0 =c

or c=0

as the value of the constant is zero which gives us that it is a linear equation and this order pair satisfies the system of linear equations.