Plzz help Add 4.2+(-0.4)
plot the first addend and then the sum on the number line

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put a dot on the knot after the 4 that represents 4.2 then place the dot at the knot right before 4 that represents the 3.8. each knot is moving up or down by 2.

Step-by-step explanation:

hopes this helps also branly please

to find the perimeter of the rectangle this is the expression:

x-9+x-9+3x-4+3x-4=138

if we simplify it:

8x-26=138

remember, 138 is what it all adds up to

the length is 11.5cm

the width is 57.5cm

the area is 661.25cm^2

the answers might not be correct use at own risk