Peter has twice as many stickers as joe. joe has 40 more stickers than emily. they have 300 stickers altogether. how many stickers does peter have?

170

Step-by-step explanation:

Equations derived from given info.

Use some substitution now.

Substitute first and second equation into third.

Emily has 45 stickers. But we want to know what Peter has.

Use P=2(E+40)

Peter has 170 stickers.

(-1,-0.5)

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.