True or false, the ratios 4:10 and 8:20 are equivalent PLEASE HELP IF I FAIL MY MOM IS GONNA-

True

Step-by-step explanation:

They multiplied both sides of 4:10 by 2 to get 8:20

Hope This helps stop your mom from whatever shes gonna do!

area of part 1:

a1=base*height/2=(8+2)*(8-2-2-1)/2=10*3/2=15 ft^2

area of part 2:

a2=length*width=(8+2)*1=10 ft2

area of part 3:

a3=length*width=8*2=16 ft2

total shaded area : a1+a2+a3=41 ft2

total area of the reactangle : a=16*8=128 ft2

total area of the nonshaded region : 128-41=87 ft2

the answer is 11.2 (i know i’m late)