What is -5 4/5 as a decimal

-4.2

Step-by-step explanation:

multiply -5 and 5 which is -25 then add 4 which will get u -21 keep the denominator the improper fraction form is -21/5 then divide u will get, -4.2.

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10 cm

step-by-step explanation:

if the polygon is a rectangle, then the perimeter is x+x+y+y. using the values that you gave, the perimeter is 3+3+2+2=10cm.