#1 7.1 years old
#2 7.8 years old
#3 87.4
#4 74
#5 7.4
If length is x, then width is 6+x
<span>Perimeter = 2*(x + 6+x) = 52 </span>
<span>2*6 + 2*2x = 52 </span>
<span>4x = 52 - 12 = 40 </span>
<span>x = 40/4 = 10 </span>
<span>Area = length*width = 10*(6+10) </span>
<span>Area = 10*16 = 160 meter square</span>
I think the answer is D. hours because its variation does not depend on another variable
1 7/10 is equivalent to the improper fraction 17/10
