5+4=9 so 9 is the perimeter of the object cause perimeter is adding
Answer: Do you have any options? and is one of the options 8 ?
Step-by-step explanation:
7. the unit rate is 30 divide 60 by 2 and 90 by 3 to show u r work
8.the unit rate is 1.89 divide 18.90 by 10 and so on
Let us find the slopes of the two lines
ax+by=c, slope m1 = -a/b
bx-ay=c, slope m2 = b/a
m1*m2 = (-a/b)(b/a) = -1
Therefore the two lines are perpendicular so the answer is D
